WO2013042736A1 - Adapter, camera system, and adapter control program - Google Patents

Abstract

An adapter is provided with: a first mounting section which enables a camera body to be attached/detached; a second mounting section which is provided separately from the first mounting section and enables a replacement lens to be attached/detached; and an input unit which enables information relating to the replacement lens to be input, without involving the replacement lens. An adapter control unit prepares body transmission lens information which is sent to the camera body, on the basis of information relating to the replacement lens which has been input from the input unit.

Description

Adapter, camera system, and adapter control program

The present invention relates to an adapter, a camera system, and an adapter control program.
This application claims priority based on Japanese Patent Application No. 2011-204629 filed on September 20, 2011, the contents of which are incorporated herein by reference.

There is an interchangeable lens type camera system that includes a camera body and an interchangeable lens that can be attached to and detached from the camera body (see, for example, Patent Document 1).
In this interchangeable lens camera system, it is possible to capture images through various types of optical systems by changing the interchangeable lens mounted on the camera body.

Japanese Unexamined Patent Publication No. 2008-275890

In recent years, in a digital camera system, a new interchangeable lens camera system has been developed in which the size of the camera body is smaller than before.
However, the camera body of this new interchangeable lens camera system may not be able to function by attaching the interchangeable lens of the existing camera system.
By the way, existing interchangeable lenses are generally widely used. Therefore, in a new interchangeable lens camera system, in order to enable imaging through various types of optical systems, an existing interchangeable lens can be mounted and functioned on the camera system. Is desired.
The functioning of the interchangeable lens on the camera system includes the function of controlling the camera side using information specific to the interchangeable lens.

An object of an aspect of the present invention is to provide an adapter, a camera system, and an adapter control program that allow various types of optical systems to function properly on the camera system in an interchangeable lens camera system.

The aspect of the present invention is provided separately from the first mount portion to which the camera body can be attached and detached, and the second mount portion to which the interchangeable lens can be attached and detached, and attached to the first mount portion. An adapter control unit capable of communicating with the camera body, and an input unit capable of inputting information related to the interchangeable lens without passing through the interchangeable lens, the adapter control unit including the input unit Based on the information related to the interchangeable lens input from, an adapter for preparing body transmission lens information to be transmitted to the camera body is prepared.

According to another aspect of the present invention, there is provided a camera comprising: the adapter described above; the camera body mounted on the first mount portion; and the interchangeable lens mounted on the second mount portion. System.

According to another aspect of the present invention, there is provided an adapter including a first mount part to which a camera body can be attached and detached, and a second mount part that is provided separately from the first mount part and to which an interchangeable lens can be attached and detached. An adapter control program for controlling the operation of an adapter control unit provided, and preparing body transmission lens information to be transmitted to the camera body based on information on the interchangeable lens input from the input unit An adapter control program for causing a computer to execute a step and the step of transmitting the prepared body transmission lens information to the camera body.

According to the aspect of the present invention, various types of optical systems can be appropriately functioned on the camera system in the interchangeable lens camera system.

It is a perspective view which shows the structure of the camera system by one Embodiment of this invention. It is a perspective view which shows an example of a structure of the adapter by this embodiment. It is a schematic block diagram which shows the 1st example of a structure of the camera system by this embodiment. It is a flowchart which shows the outline | summary of the state transition of the process which concerns on the interchangeable lens by this embodiment. It is a figure which shows an example of the communication sequence of command data communication in a lens regular process. It is a figure which shows an example of the lens information which the adapter by this embodiment produces | generates. It is a flowchart which shows an example of the production | generation process of the transmission data by the adapter in this embodiment. It is a schematic block diagram which shows the 2nd example of a structure of the camera system by this embodiment.

Embodiments of the present invention will be described below with reference to the drawings.
[First Embodiment]
FIG. 1 is a perspective view showing a configuration of a camera system 1 according to an embodiment of the present invention.
A camera system 1 shown in FIG. 1 is an interchangeable lens type camera system. The camera system 1 includes a camera body 100, an interchangeable lens 200, an adapter 300 that is provided between the camera body 100 and the interchangeable lens 200, and is detachably fixed to the camera body 100 and the interchangeable lens 200, respectively. It is equipped with.

In the present embodiment, an example in which the interchangeable lens 200 is an interchangeable lens that does not include a lens control unit that can communicate with the camera body 100 or the adapter 300 will be described. In the description of the present embodiment, an interchangeable lens that does not include a lens control unit that can communicate with the camera body 100 or the adapter 300 is referred to as a “non-CPU lens”, and a lens that can communicate with the camera body 100 or the adapter 300. The interchangeable lens provided with the control unit is referred to as “CPU lens” and will be described below.

In FIG. 1, the adapter 300 is attached to the camera body 100. The interchangeable lens 200 is attached to the camera body 100 via the adapter 300.

In this camera system 1, the specification of the camera body side mount 101 that is a lens mount included in the camera body 100 and the specification of the lens side mount 201 that is a lens mount included in the interchangeable lens 200 are different from each other. is there. For example, the specifications of the camera body side mount 101 and the specifications of the lens side mount 201 are different from each other in the specifications of the mount shape and the specifications of the connection terminals to be electrically connected. In addition, the communication standard and the type of communication data communicated via the connection terminal are different from each other. Therefore, the interchangeable lens 200 cannot be directly attached to the camera body 100.

Therefore, the adapter 300 is configured as a mount adapter that allows the camera body 100 and the interchangeable lens 200 to be mounted indirectly. Furthermore, the adapter 300 is configured to enable communication between the camera body 100 and the interchangeable lens 200 having different communication standards and communication data types without changing the communication standards. Has been.

The camera body 100 also includes a power button 131, a release button 132, a rear operation unit 133, and a display unit 150.

The power button 131 is an operation member for switching on and off the main power supply in the camera body 100.

The release button 132 is an operation member that receives an instruction to start shooting processing. For example, the release button 132 is pressed halfway (half-pressed state, for example, accepting focus adjustment, exposure adjustment, etc.) and fully pressed (full-pressed state, for example, accepting an instruction to start exposure). Two types of shooting processing start instructions are accepted.

The rear operation unit 133 is provided on the rear surface of the housing surface of the camera body 100 that is the opposite surface of the surface on which the camera body side mount 101 is provided. The rear operation unit 133 includes operation members such as operation mode selection buttons (for example, a mode dial) or various setting condition selection buttons (for example, a menu button and up / down / left / right selection buttons). .

The display unit 150 is provided on the back side similarly to the back side operation unit 133, and displays a captured image or a menu screen for selecting various setting conditions. The display unit 150 includes, for example, a liquid crystal display or an organic EL (Electro-Luminescence) display.

FIG. 2 is a perspective view showing an example of the configuration of the adapter 300 according to the present embodiment.
The adapter 300 includes a first mount part to which the camera body 100 can be attached and detached, and a second mount part that is provided separately from the first mount part and from which the interchangeable lens 200 can be attached and detached.

For example, as illustrated in FIG. 2, the adapter 300 includes a first mount 301 (first mount portion) that can be attached to and detached from the camera body side mount 101 provided in the camera body 100, and a lens side provided in the interchangeable lens 200. And a second mount 302 (second mount portion) that can be attached to and detached from the mount 201.

A plurality of electrical connection terminals (mount contacts) corresponding to each of a plurality of electrical connection terminals provided in the vicinity of the camera body side mount 101 are provided in the vicinity of the first mount 301. ing. Therefore, when the adapter 300 is attached to the camera body 100, the adapter 300 is electrically connected to the camera body 100 via the plurality of connection terminals.
A plurality of electrical connection terminals are provided in the vicinity of the second mount 302.

Further, the adapter 300 includes a tripod seat 305 for enabling the adapter 300 to be attached to a tripod, a lens attaching / detaching button 306, an aperture interlocking lever 350, and an input unit 360.

The lens attachment / detachment button 306 is a button for unlocking a lock mechanism that is mechanically locked when the interchangeable lens 200 is attached. That is, the lens attaching / detaching button 306 is an operation member that is operated when the user removes the interchangeable lens 200 attached to the adapter 300.

The input unit 360 is an information input unit that can input information related to the interchangeable lens 200 (for example, information related to specifications of an interchangeable lens as described later). The input unit 360 includes an operation unit 361 and a display unit 362, for example.
The configuration of the input unit 360 will be described in detail later.

When the aperture opening diameter of the interchangeable lens 200 can be changed from the camera body 100, the aperture interlocking lever 350 (aperture interlocking mechanism unit) is the aperture diameter of the aperture of the interchangeable lens 200 (the amount of aperture, aperture size, aperture ratio). , The aperture value) is provided in the adapter 300 as a lever for displacing a diaphragm mechanism including a plurality of diaphragm blades. When the position of the diaphragm interlocking lever 350 moves in the direction along the inner periphery of the adapter 300, the aperture diameter of the diaphragm of the interchangeable lens 200 is changed.
That is, the aperture interlocking lever 350 moves to a position corresponding to the aperture value of the aperture mechanism 251 (aperture) provided in the interchangeable lens 200.

<Description of block configuration of camera system>
Next, a block configuration of the camera system 1 will be described with reference to FIG.
FIG. 3 is a schematic block diagram illustrating an example of the configuration of the camera system 1 according to the present embodiment. In this figure, the camera body 100 and the interchangeable lens 200 are attached via an adapter 300. In addition, the camera body 100 and the adapter 300 are electrically connected to each other through connection terminals.

First, an outline of the configuration of the camera system 1 will be described.
The camera body 100 includes a camera body side mount 101 including a connection portion 101s. The adapter 300 includes a first mount 301 including a connection portion 301s and a second mount 302 including a connection portion 302s.

The camera body 100 and the adapter 300 are mounted (physically connected) via the camera body side mount 101 and the first mount 301, and are electrically connected via the connection portion 101s and the connection portion 301s. Yes. Each of the connection portion 101s and the connection portion 301s includes eight connection terminals (terminals Ta1 to Ta8 and terminals Tb1 to Tb8) that are electrically connected to each other, and the camera body 100 and the adapter are connected via the connection terminals. Power supply (voltage supply) and signal exchange (communication) are performed with 300.
In addition, transmission / reception (communication) of a signal is performed between the camera control part 110 with which the camera body 100 is provided, and the adapter control part 310 with which the adapter 300 is provided.

Further, the interchangeable lens 200 and the adapter 300 are mounted (physically connected) via the lens side mount 201 and the second mount 302. The connection portion 302s includes seven connection terminals (terminals Tc1 to Tc7) that are electrically connected. When the interchangeable lens 200 is a CPU lens, the CPU lens and the adapter 300 are connected via the connection terminals. Power supply (voltage supply) and signal transmission / reception (communication) are performed.

(Configuration of camera body)
Next, the configuration of the camera body 100 will be described.
The camera body 100 includes a camera control unit 110, a camera power supply unit 120, a switch 125, a battery unit 190B, and a connection unit 101s (terminals Ta1 to Ta8).

The connection unit 101s includes eight connection terminals Ta1 to Ta8 as connection terminals connected to the eight connection terminals (terminals Tb1 to Tb8) of the connection unit 301s included in the adapter 300.
The configuration of the adapter 300 will be described later in detail.

The battery unit 190B houses the battery 190.
The voltage (or current) from the battery 190 is supplied to an electric circuit in the camera body 100 including the camera control unit 110 and an electric circuit in the adapter 300 including the adapter control unit 310. The voltage (current) from the battery 190 is also supplied to the CPU lens when the interchangeable lens mounted on the adapter 300 requires a voltage (current) supply. . For example, the battery 190 is a lithium ion secondary battery or a nickel hydride secondary battery. The battery 190 may be a primary battery such as an alkaline battery. In addition, the camera body 100 is not limited to a configuration in which a voltage is supplied from the battery 190, and a voltage is supplied from an external DC power source (for example, an AC adapter that converts the AC power source into a DC power source and supplies the voltage). Also good.

The camera power supply unit 120 converts the battery voltage so that the voltage supplied from the battery 190 can be supplied to the camera body 100 or a camera accessory connected to the camera body 100. For example, the camera power supply unit 120 is connected to a power supply Vcc0 that supplies a voltage to a control system circuit (mainly the camera control unit 110) included in the camera body 100 and a connection unit 101s by converting a battery voltage. It is divided into a power supply Vcc1, which is a first power supply system that supplies a voltage to the adapter 300. The voltage of the power supply Vcc1 is supplied to a control system circuit (mainly the adapter control unit 310) provided in the adapter 300. Hereinafter, this power supply Vcc1 is referred to as a control system power supply Vcc1.

Further, the camera power supply unit 120 switches between a voltage supply state and a supply stop state by the control system power supply Vcc1 under the control of the camera control unit 110. Furthermore, the camera power supply unit 120 controls the power that can be supplied (power amount and power supply amount) under the control of the camera control unit 110. For example, the camera power supply unit 120 is in a state (normal power supply state) in which the power (power amount, power supply amount) that can be supplied to the extent that the camera system 1 can execute the imaging process is large, and to the extent that the imaging process cannot be performed. The state (small power supply state) with a small amount of power (power amount, power supply amount) that can be supplied is switched.
The voltage of the control system power supply Vcc1 is supplied to the adapter control unit 310 via the terminal Ta3 and the terminal Tb3.

Further, the positive terminal of the battery 190 and the terminal Ta2 are connected to the battery unit 190B via the switch 125. As a result, the power supply PWR as the second power supply system is generated from the battery 190 separately from the power supply Vcc1 as the first power supply system described above, and the voltage from the power supply PWR is supplied to the adapter power supply unit 320. The voltage of the power supply PWR is supplied to the adapter power supply unit 320 via the terminal Ta2 and the terminal Tb2. Instead of the battery 190, the voltage of the power source PWR may be supplied from an external DC power source. The power supply PWR is a power supply system that can supply more power than the control system power supply Vcc1. Hereinafter, this power supply PWR is referred to as a power system power supply PWR.

The power system ground PGND, which is a ground (GND) corresponding to the power system power supply PWR, is connected to each part to which the voltage of the power system power supply PWR is supplied and the terminal Ta1. On the other hand, a control system ground SGND that is a ground corresponding to the control system power supply Vcc1 is connected to a terminal Ta8. The power system ground PGND and the control system ground SGND are grounds having the same potential as the negative terminal of the battery 190 via the battery unit 190B.
The control system ground SGND is also a ground corresponding to the power supply Vcc0, and the control system ground SGND is connected to the ground terminal of the camera control unit 110.

The switch 125 switches between a conduction state and a cutoff state (non-conduction state) under the control of the camera control unit 110. That is, the switch 125 switches whether to supply the voltage of the power system power supply PWR to the terminal Ta2 under the control of the camera control unit 110.

The camera control unit 110 includes a camera power supply control unit 111 and a first camera communication unit 112. The camera control unit 110 controls each unit included in the camera body 100 and performs communication of the first data communication system D1b with the adapter control unit 310 of the adapter 300 connected through the connection unit 101s.

The camera power supply control unit 111 controls the camera power supply unit 120 and the switch 125 based on the state of the camera body 100 or the communication state by the first camera communication unit 112.
Note that the first camera communication unit 112 performs communication of the first data communication system D1b independently.

The first data communication system D1b is a communication system based on serial interface full-duplex communication. The first camera communication unit 112 performs transmission / reception (communication) of four types of signals RDY, CLK1, DATAB, and DATAL as the first data communication system D1b.

The signal RDY is a signal for notifying the first camera communication unit 112 of whether communication is possible. The signal RDY is transmitted (output) from the first adapter communication unit 312 described later to the first camera communication unit 112 via the terminal Ta4. The signal CLK1 is a clock signal for serial communication. The clock signal CLK1 is transmitted (output) from the first camera communication unit 112 to the first adapter communication unit 312 via the terminal Ta5. The signal DATAB is a data signal related to the camera body 100 that is output from the first camera communication unit 112 to the first adapter communication unit 312 via the terminal Ta6. The signal DATAL is a data signal related to the interchangeable lens 200 that is output from the first adapter communication unit 312 to the first camera communication unit 112. The first camera communication unit 112 receives the signal DATAL via the terminal Ta7.

(Configuration of interchangeable lens)
Next, the configuration of the interchangeable lens 200 will be described.
The interchangeable lens 200 shown in the first embodiment (see FIG. 3) includes an optical system 220, a focus ring 260, and a diaphragm ring 255. However, the interchangeable lens 200 is a “non-CPU lens” that does not include a lens control unit that can communicate with the camera body 100 or the adapter 300. The optical system 220 includes a lens 221, a focus adjustment lens (hereinafter referred to as a focus lens) 222, and a diaphragm unit 250. Subject light (optical image) incident through the optical system 220 is guided to a light receiving surface of a well-known imaging element (not shown) provided in the camera body 100 through an adapter 300.
The interchangeable lens 200 is, for example, a lens that does not electrically drive the optical system. The focus ring 260 enables the position of the focus lens 222 to be adjusted by a user operation. The aperture ring 255 allows the aperture diameter of the aperture mechanism 251B to be changed by a user operation.

The diaphragm unit 250 includes a diaphragm mechanism 251 including a plurality of diaphragm blades and a diaphragm lever 252 that mechanically operates the diaphragm mechanism 251. Therefore, the aperture diameter of the interchangeable lens 200 changes when the aperture lever 252 mechanically operates the aperture mechanism 251. The interchangeable lens 200 in the camera system 1 shown in FIG. 3 is a lens that does not incorporate a power source such as an actuator that drives the diaphragm mechanism 251, and the diaphragm mechanism 251 is driven by the diaphragm ring 255 via the diaphragm lever 252. Lens.

In the interchangeable lens 200, the aperture diameter (opening and aperture value) of the aperture mechanism 251 is changed by operating the aperture ring 255 by the user. Therefore, the adapter controller 310 does not interfere with the position of the diaphragm lever 252 whose position moves in accordance with the change in the aperture diameter (opening, aperture value) of the aperture mechanism 251 (the position that does not hinder the movement). The diaphragm interlocking lever 350 is controlled to the retracted position.
Thereby, the interchangeable lens 200 can be connected to the camera body 100 via the adapter 300, and can be made to function by manual operation according to the specification of the interchangeable lens 200.

(Adapter configuration)
Next, the configuration of the adapter 300 will be described.
The adapter 300 includes an adapter control unit 310, an adapter power supply unit 320, an aperture interlocking lever driving unit 330 (aperture interlocking mechanism driving unit), a connection unit 301s (terminals Tb1 to Tb8), and a connection unit 302s (terminals Tc1 to Tc7). ), An input unit 360, and an aperture interlocking lever 350.

The connection unit 301s includes eight connection terminals Tb1 to Tb8 that are connected to the eight connection terminals Ta1 to Ta8 described above on the camera body 100 side. When the adapter 300 and the camera body 100 are connected via the connection portion 301s and the connection portion 101s, the terminals Tb1 to Tb8 of the connection portion 301s correspond to the terminals Ta1 to Ta8 of the connection portion 101s, respectively. It is electrically connected to the connection terminal.

Further, the connection unit 302s includes seven connection terminals Tc1 to Tc7 that are connected to the connection terminal on the CPU lens side when the CPU lens is attached to the adapter 300.

Terminal Tb2 is connected to terminal Ta2, and terminal Tb3 is connected to terminal Ta3. As a result, the voltage of the power system power supply PWR is supplied from the camera body 100 to the terminal Tb2 through the terminal Ta2, and the voltage of the control system power supply Vcc1 is supplied to the terminal Tb3 through the terminal Ta3. As a result, the adapter power supply unit 320 is supplied with the voltage of the power system power supply PWR from the camera body 100 via the terminal Ta2 and the terminal Tb2.
On the other hand, the adapter control unit 310 is supplied with the voltage of the control system power supply Vcc1 from the camera body 100 via the terminal Ta3 and the terminal Tb3.

As described above, the adapter 300 includes the voltage of the control system power supply Vcc1 (the voltage of the first power supply system) from the camera body 100 and the voltage of the power system power supply PWR (the first power supply that can be supplied in comparison with the control system power supply Vcc1). And two power supply system voltages). The voltage of the power system power supply PWR supplied to the adapter power supply unit 320 is a lens system power supply system that supplies a voltage when the CPU lens is attached to the adapter 300, and a lens driving system power supply Vp (third power supply system) and a lens. It is divided (converted) into a control system power supply Vc (fourth power supply system). For example, the adapter power supply unit 320 generates supply voltages for the lens driving system power supply Vp and the lens control system power supply Vc that supply power to the CPU lens from the power system power supply PWR supplied from the camera body 100.
Note that the voltage supplied from the lens driving system power supply Vp is larger than the voltage supplied from the lens control system power supply Vc. Further, the power consumption in the load supplied from the lens driving system power supply Vp may be larger than the power consumption in the load supplied from the lens control system power supply Vc.

Further, from the power system power supply PWR supplied to the adapter power supply section 320, a power supply Vm (fifth) for supplying a voltage to the aperture interlocking lever drive section 330, separately from the lens drive system power supply Vp and the lens control system power supply Vc described above. A power system is also generated (separated). Hereinafter, this power source Vm is referred to as a diaphragm driving power source Vm.
For example, the adapter power supply unit 320 includes a voltage conversion unit (not shown) that converts the voltage of the power system power supply PWR into a predetermined voltage of the diaphragm drive power supply Vm. This voltage conversion unit includes, for example, a DC-DC converter. The voltage conversion unit converts the voltage into a voltage that is stepped up and down to a predetermined voltage (a predetermined voltage of the diaphragm driving power source Vm), for example. Then, the adapter power supply unit 320 supplies the generated voltage of the diaphragm driving power source Vm to the diaphragm interlocking lever driving unit 330.

Note that the adapter power supply unit 320 may include a first regulator unit that converts (generates) the voltage of the lens control system power supply Vc based on the voltage of the diaphragm drive power supply Vm.
For example, the first regulator unit converts the voltage of the diaphragm driving power source Vm into a voltage that is stepped down to a predetermined voltage (a predetermined voltage of the lens control system power source Vc). For example, this 1st regulator part is good also as a structure provided with the 1st linear regulator. The voltage of the diaphragm driving power source Vm is set to be higher than the voltage of the lens control system power source Vc.

Further, the adapter power supply unit 320 may include a second regulator unit that converts (generates) the voltage of the lens driving system power supply Vp based on the voltage of the power system power supply PWR. For example, the second regulator unit converts the voltage of the power system power supply PWR into a voltage that is stepped down to a predetermined voltage (a predetermined voltage of the lens driving system power supply Vp). For example, this 2nd regulator part is good also as a structure provided with the 2nd linear regulator. In this case, the second regulator unit is configured such that the power that can be supplied is larger than the first regulator unit (the amount of power supply is large). The adapter power supply unit 320 includes a voltage detection unit (not shown) that detects a power supply voltage, and supplies the detection result to the adapter control unit 310.

In addition, the connection of each power supply system converted by the adapter power supply part 320 is as follows.
The terminal Tc2 is connected to the output terminal of the lens drive system power supply Vp of the adapter power supply unit 320 (terminal that outputs the voltage of the lens drive system power supply Vp). The terminal Tc3 is connected to the output terminal of the lens control system power supply Vc of the adapter power supply unit 320 (terminal that outputs the voltage of the lens control system power supply Vc). Thereby, the adapter power supply unit 320 supplies the voltage of the lens driving system power supply Vp to the terminal Tc2, and supplies the voltage of the lens control system power supply Vc to the terminal Tc3.

When the aperture opening diameter of the interchangeable lens 200 is changeable, the aperture interlocking lever driving unit 330 moves the position of the aperture interlocking lever 350 under the control of the adapter control unit 310.
The aperture interlocking lever driving unit 330 moves the aperture interlocking lever 350 to displace the aperture mechanism 251 of the interchangeable lens 200 via the aperture lever 252. In addition, the aperture interlocking lever driving unit 330 detects the position of the aperture interlocking lever 350 and outputs the detection result to the adapter control unit 310.

For example, the aperture interlocking lever driving unit 330 detects the position of an aperture driving actuator (for example, a stepping motor) that drives the aperture interlocking lever 350, a motor driving unit that drives and controls the aperture driving actuator, and the position of the aperture interlocking lever 350. A diaphragm interlocking lever position detection unit is provided. As a result, in the aperture interlocking lever driving unit 330, the motor driving unit drives the aperture driving actuator, so that the aperture driving actuator drives the aperture interlocking lever 350. In the aperture interlocking lever driving unit 330, an aperture interlocking lever position detection unit (for example, a photo interrupter) detects the position of the aperture interlocking lever 350 and supplies the detection result to the adapter control unit 310.

The storage unit 340 is, for example, a non-volatile memory, and stores information that can be handled by a predetermined fixed value among the lens information of the interchangeable lens 200 in advance. Here, the lens information is information that the interchangeable lens 200 originally transmits to the camera body 100 when requested by the camera body 100. For example, information (lens information) of the optical system 220 described later is included. included. The lens information is information related to the specifications of the interchangeable lens (optical system 220) such as exit pupil position information, wide open F value information, wide open aperture value, aberration correction information, absolute distance information, AF correction information, and focal length information. is there. That is, the storage unit 340 excludes lens information that can be generated based on information regarding the interchangeable lens 200 (information regarding the specifications of the interchangeable lens) input from the input unit 360 described later from among the plurality of pieces of lens information. Is remembered. Here, the lens information that can be generated based on the information regarding the specification of the interchangeable lens 200 input from the input unit 360 includes the case where the information regarding the specification of the interchangeable lens 200 indicates the lens information itself and the specification of the interchangeable lens 200. The case where it can be estimated based on information is included. In the present embodiment, the storage unit 340 stores a part of the lens information of the interchangeable lens 200 that is information that is normally transmitted by the interchangeable lens 200 in advance.

The input unit 360 includes, for example, an operation unit 361 and a display unit 362, and is arranged on the adapter 300 at a position where an operator (user) can operate (see FIG. 2). Information related to the interchangeable lens 200 (such as information related to specifications) is input to the input unit 360 by an operator (user). The information related to the interchangeable lens 200 is a part of the lens information related to the specifications of the interchangeable lens described above, and includes, for example, an open aperture value and focal length information of the interchangeable lens 200.

The information regarding the specifications of the interchangeable lens 200 (lens information of the interchangeable lens 200) includes, for example, information indicating the optical characteristics of the interchangeable lens 200, information indicating the function of the interchangeable lens 200, information for controlling the interchangeable lens 200, Etc. That is, the information regarding the specifications of the interchangeable lens 200 includes information indicating the optical characteristics of the interchangeable lens 200. Here, the information indicating the optical characteristics of the interchangeable lens 200 includes, for example, information indicating the exit pupil position (exit pupil position information), information indicating the open F value (open F value information), and information indicating the chromatic aberration of magnification (magnification) Chromatic aberration information), information indicating spectral transmittance (spectral transmittance information), information indicating peripheral light amount (dimming) (dimming information), focal length information (focal length, etc.), and the like. The information indicating the function of the interchangeable lens 200 is, for example, information on the image stabilization function, information on the presence / absence of an operation switch, and the like. The information for controlling the interchangeable lens 200 includes, for example, information on correction parameters for correcting the image plane movement amount, information on various other correction values, information on various driving limit values, and the like.

In the present embodiment, as an example, the input unit 360 receives an open aperture value (information indicating the open F value) and focal length information (information indicating the focal length of the optical system 220) of the interchangeable lens 200 by the operator. Is done. The input unit 360 supplies the open aperture value and focal length information of the interchangeable lens 200 input by the operator to the adapter control unit 310 described later.

The operation unit 361 is an operation unit that can input information related to the specification of the interchangeable lens 200 in accordance with an operation by the operator, and is, for example, a key switch or an operation button.

The display unit 362 includes, for example, a liquid crystal display or an organic EL (Electro-Luminescence) display. The display unit 362 displays a menu for operating information related to the specification of the interchangeable lens 200 and information related to the specification of the interchangeable lens 200 (open aperture value and focal length information) input by the operation unit 361.

The adapter control unit 310 is a control unit that can communicate with the camera body 100 mounted on the first mount 301. The adapter control unit 310 includes an adapter power supply control unit 311, a first adapter communication unit 312, and an aperture control unit 314. The adapter control unit 310 is controlled by periodic communication with the camera control unit 110 and controls processing performed in each unit provided in the adapter 300. The adapter control unit 310 performs periodic communication with the lens control unit when the CPU lens is attached to the adapter 300. For example, the adapter control unit 310 performs regular periodic communication with the camera control unit 110. The adapter control unit 310 also performs regular periodic communication with the lens control unit when the CPU lens is attached to the adapter 300.

Further, the adapter control unit 310 controls the aperture interlocking lever driving unit 330 based on communication from the camera control unit 110 for controlling photographing processing. In addition, when the CPU lens is attached to the adapter 300, the adapter control unit 310 communicates with the lens control unit in order to control the optical system driving unit of the CPU lens. In addition, since the interchangeable lens 200 in this embodiment is an example in case of a non-CPU lens, the adapter control part 310 does not perform communication with the interchangeable lens 200.

Note that the adapter control unit 310 performs the following two types of communication processing in response to the lens information request from the camera body 100.
(First communication process)
When the lens information can be estimated based on the information related to the specification of the interchangeable lens 200, the adapter control unit 310 executes the following processing.
In this case, the adapter control unit 310 requests the lens information requested from the camera body 100 for body transmission lens information to be transmitted to the camera body 100 based on the information regarding the specifications of the interchangeable lens 200 input from the input unit 360. Generate (prepare) information. Note that the information related to the specification of the interchangeable lens 200 is lens information of the interchangeable lens 200 attached to the second mount 302, for example, focal length information. The adapter control unit 310 generates (prepares) the body transmission lens information by a predetermined estimation calculation based on information (for example, focal length information) regarding the specification of the interchangeable lens 200 input from the input unit 360. That is, the adapter controller 310 generates (prepares) body transmission lens information without being based on the lens information acquired from the interchangeable lens 200 attached to the second mount 302.
The adapter control unit 310 transmits the generated body transmission lens information to the camera body 100.

(Second communication process)
When the lens information cannot be estimated based on the information regarding the specification of the interchangeable lens 200, the adapter control unit 310 executes the following processing.
In this case, the adapter control unit 310 generates (prepars) a fixed value as the lens information for body transmission. The fixed value is information stored in advance as lens information in the storage unit 340 included in the adapter control unit 310.
The adapter control unit 310 transmits the generated body transmission lens information to the camera body 100.

As described above, in this embodiment, the adapter control unit 310 performs the above-described two types of communication processing in response to the lens information request from the camera body 100, but does not acquire the lens information from the interchangeable lens 200. Next, lens information for body transmission is generated (prepared).
That is, as described above, the adapter control unit 310 can input information regarding the interchangeable lens according to the input from the input unit 360 without using the interchangeable lens 200. Further, as described above, the adapter control unit 310 can generate (prepare) “body transmission lens information” to be transmitted to the camera body 100 regardless of the interchangeable lens 200 based on the input information. is there. Further, as described above, the adapter control unit 310 can transmit the generated body transmission lens information to the camera body regardless of the interchangeable lens.

The adapter power supply control unit 311 controls the adapter power supply unit 320 according to the result of communication with the camera control unit 110 (or the lens control unit when the CPU lens is attached to the adapter 300), the state of the adapter 300, or the like. To do. For example, the adapter power supply control unit 311 controls the adapter power supply unit 320 according to the communication result with the camera control unit 110 (or the lens control unit when the CPU lens is attached to the adapter 300), and the lens control system. It is controlled whether or not the voltage of the power source Vc, the lens driving system power source Vp, or the aperture driving power source Vm is supplied.
The adapter power supply control unit 311 generates the voltage of the power supply system to which the voltage is supplied from the camera body 100 (in other words, the state of the voltage supplied from the camera body 100 side to the adapter 300) and the adapter 300 The voltage of the power supply system that supplies the voltage (in other words, the state of the voltage supplied to the CPU lens from the adapter 300 side) is monitored. The adapter power supply control unit 311 includes a voltage detection unit (not shown) that detects the voltage of each power supply system, and monitors the voltage of each power supply system based on the detection results from these voltage detection units. Is notified to the camera control unit 110 as necessary.

The aperture control unit 314 controls the aperture interlocking lever driving unit 330 according to the communication result with the camera control unit 110 (or the lens control unit when the CPU lens is attached to the adapter 300).
For example, the aperture control unit 314 may adjust the aperture interlock lever so that the aperture opening diameter of the aperture mechanism 251 becomes the aperture opening diameter according to the control instruction from the camera control unit 110 according to the communication result with the camera control unit 110. The drive unit 330 is controlled.

Further, the aperture control unit 314 controls the aperture interlocking lever driving unit 330 according to the process of moving the position of the aperture interlocking lever 350 to the initial position. For example, the aperture control unit 314 interlocks with the aperture at an initial position, such as a position at which the aperture mechanism 251 is opened, a retracted position that does not interfere with the aperture lever 252 that moves according to a set aperture value of the aperture mechanism 251, and the like. The diaphragm interlocking lever driving unit 330 is controlled to move the lever 350.

Further, the aperture control unit 314 acquires the position of the aperture interlocking lever 350 detected by the aperture interlocking lever driving unit 330.

The first adapter communication unit 312 performs communication of the first data communication system D1b with the first camera communication unit 112. In the present embodiment, the first adapter communication unit 312 receives the communication data requesting lens information from the first camera communication unit 112, for example, without performing communication with the interchangeable lens 200, the two types described above. The communication data according to any of the communication processes is transmitted to the first camera communication unit 112.

For example, when the lens information can be estimated based on the information related to the specification of the interchangeable lens 200, the first adapter communication unit 312 generates (prepares) the lens information for body transmission as follows. The first adapter communication unit 312 receives lens information for body transmission to be transmitted to the first camera communication unit 112 based on information (for example, focal length information) regarding the specifications of the interchangeable lens 200 input from the input unit 360. The lens information requested from the camera body 100 is generated (prepared). In addition, the first adapter communication unit 312 uses, for example, information on the specifications of the interchangeable lens 200 input from the input unit 360 (for example, an open aperture value) as the lens information requested from the camera body 100, and the lens information for body transmission. Generate (prepare).

Further, for example, when the lens information cannot be estimated based on the information related to the specification of the interchangeable lens 200, the first adapter communication unit 312 generates (prepars) lens information for body transmission as follows. The first adapter communication unit 312 reads a fixed value stored in advance in the storage unit 340 as body transmission lens information, and generates (prepares) body transmission lens information using the read fixed value as lens information.

The first adapter communication unit 312 transmits the generated body transmission lens information to the first camera communication unit 112 of the camera body 100 through communication of the first data communication system D1b.

Further, the adapter control unit 310 includes a storage unit (not shown), for example. The first adapter communication unit 312 temporarily stores the received data and the generated data such as body transmission lens information in a storage unit (not shown). And the 1st adapter communication part 312 reads the produced | generated data from the memory | storage part not shown, and transmits.

The first adapter communication unit 312 and the first camera communication unit 112 perform communication of the first data communication system D1b via four types of signal lines of signals RDY, CLK1, DATAB, and DATAL. The terminal Tb4 is connected to the first adapter communication unit 312 via the signal line of the signal RDY. The terminal Tb5 is connected to the first adapter communication unit 312 via the signal line of the signal CLK1. The terminal Tb6 is connected to the first adapter communication unit 312 via the signal line of the signal DATAB. The terminal Tb7 is connected to the first adapter communication unit 312 via a signal line DATAL. The terminal Tb4 is connected to the terminal Ta4 of the camera body 100. The terminal Tb5 is connected to the terminal Ta5 of the camera body 100. The terminal Tb6 is connected to the terminal Ta6 of the camera body 100. The terminal Tb7 is connected to the terminal Ta7 of the camera body 100.
That is, the four types of signal lines RDY, CLK1, DATAB, and DATAL for performing communication of the first data communication system D1b are connected to the first adapter communication unit 312 and the first via the terminals Tb4 to Tb7 and the terminals Ta4 to Ta7. The camera communication unit 112 is connected.

The aperture interlocking lever driving unit 330 includes a stepping motor (not shown) as an aperture driving actuator, a motor driving unit (not shown), and an aperture interlocking lever position detection unit (not shown). The stepping motor is a power source that drives the aperture interlocking lever 350 and is driven by a motor driving unit. The motor drive unit generates a pulse voltage and drives the stepping motor under the control of the adapter control unit 310. The aperture interlocking lever position detection unit includes, for example, a photo interrupter and detects the position of the aperture interlocking lever 350.

<Description of state transition>
Next, processing according to the present embodiment will be described.
First, the outline of the state transition according to the present embodiment will be described with reference to FIG.
FIG. 4 is a flowchart showing an overview of the state transition of the process related to the interchangeable lens according to the present embodiment.

First, when the main power of the camera body 100 is turned on, or when the adapter 300 is attached to the camera body 100 in a state where the main power of the camera body 100 is turned on, the adapter 300 is Under the control of 100, the “lens activation process” is executed (step S100).

Here, the “lens activation process” includes, for example, an attachment / detachment determination process of the camera body 100 with respect to the camera body side mount 101, an initialization process of the adapter 300 and the interchangeable lens 200 attached to the adapter 300, and power supply of each power supply system. Control processing, etc. Further, for example, in this lens activation process, the camera body 100 acquires information on the type and specification (function) of the interchangeable lens 200 attached to the camera body 100 via the adapter 300.

When the lens activation process is completed in step S100, the adapter 300 transitions to the “lens steady process” under the control of the camera body 100 (step S200).
The “lens steady process” is a state in which, for example, a photographing process after the lens activation process is completed is possible. In this lens steady process, the camera body 100 executes “steady communication” in which, for example, detection of the mounting state of the interchangeable lens 200 mounted via the adapter 300 and acquisition of information on the optical system are performed in a predetermined cycle. . This lens steady process will be described later with reference to FIG.

Next, the camera body 100 or the adapter 300 determines whether or not an interrupt request has occurred during the lens steady process (step S300). If it is determined in step S300 that there is no interrupt request, the adapter 300 continues the lens steady process under the control of the camera body 100. On the other hand, when it is determined in step S300 that there is an interrupt request, the camera body 100 or the adapter 300 transitions to the requested interrupt process (step S400). Here, the interrupt process is, for example, a shooting start process by a release operation, a process at the time of instantaneous power interruption, a shift to a low power consumption mode, or a power cut-off process by turning off the power.

(Explanation of command data communication in regular lens processing)
Next, command data communication executed in the lens steady process (step S200 in FIG. 4) will be described.

FIG. 5 is a diagram illustrating an example of a communication sequence of command data communication in the lens steady process.
FIG. 5 shows an example of command data communication taking the camera system 1 in which the interchangeable lens 200 (non-CPU lens) and the camera body 100 are connected via an adapter 300 as an example. The adapter control unit 310 can periodically perform periodic communication with the camera control unit 110. By executing this periodic communication, lens information (such as information on the optical system 220) is transmitted to the camera control unit 110 in response to a request from the camera control unit 110.

In the “lens steady process”, for example, as shown in FIG. 5, the first adapter communication unit 312 does not execute the first regular communication with the interchangeable lens 200 and is provided in the camera body 100. The second regular communication for communicating with the camera control unit 110 is executed. In FIG. 5, an example in which the camera system 1 executes a lens information request process as an example of the “lens steady process” will be described.

In FIG. 5, the process of step S <b> 1010 indicates a process when the camera body 100 requests lens information from the interchangeable lens 200. In this case, the first adapter communication unit 312 performs communication with the first camera communication unit 112 by any one of the two types of communication processes described above without performing communication with the interchangeable lens 200.

First, the first camera communication unit 112 transmits a lens information request for requesting lens information to the first adapter communication unit 312 through communication of the first data communication system D1b (step S1011).

Next, the first adapter communication unit 312 generates (prepares) body transmission lens information as transmission data (step S2010). That is, when the lens information can be estimated, the first adapter communication unit 312 determines the lens information for body transmission based on information (for example, focal length information) related to the specification of the interchangeable lens 200 input from the input unit 360. Is generated (prepared). In addition, when the lens information cannot be estimated, the first adapter communication unit 312 reads a fixed value stored in advance in the storage unit 340, and uses the read fixed value as lens information to obtain lens information for body transmission. Generate (prepare).

Next, the first adapter communication unit 312 transmits the generated body transmission lens information to the first camera communication unit 112 of the camera body 100 through communication of the first data communication system D1b (step S1012).

Thus, when the camera body 100 acquires the lens information of the interchangeable lens 200, the first adapter communication unit 312 does not perform communication with the interchangeable lens 200. Therefore, the first adapter communication unit 312 does not need to convert the response information from the interchangeable lens 200 into a communication standard for communication of the first data communication system D1b. Therefore, the first adapter communication unit 312 can reduce the amount of calculation and shorten the processing time in the process in which the camera body 100 acquires the lens information of the interchangeable lens 200.

FIG. 6 is a diagram illustrating an example of lens information generated by the adapter 300 according to the present embodiment.
In FIG. 6, the left column indicates items of lens information.
Further, the right column indicates transmission lens information generated by the adapter 300.

When the lens information item requested by the camera body 100 is the aberration correction information, the absolute distance information, or the AF correction information shown in FIG. 6, the first adapter communication unit 312 stores in the storage unit 340 in advance. The stored fixed value is read, and lens information for body transmission is generated (prepared) using the read fixed value as lens information. For example, when the lens information item requested by the camera body 100 is aberration correction information, the first adapter communication unit 312 uses the fixed value (for example, “0”) read from the storage unit 340 as the lens information for body transmission. Generate (prepare) as For example, when the lens information item requested by the camera body 100 is absolute distance information, the first adapter communication unit 312 uses a fixed value (for example, a data value corresponding to infinity) read from the storage unit 340. It is generated (prepared) as lens information for body transmission. For example, when the lens information item requested by the camera body 100 is AF correction information, the first adapter communication unit 312 uses a fixed value (for example, a data value corresponding to invalidity) read from the storage unit 340. It is generated (prepared) as lens information for body transmission.

When the lens information item requested by the camera body 100 is the exit pupil position information, the open F value information, or the focal length information shown in FIG. Based on the information regarding the specifications of the interchangeable lens 200 input from the unit 360, lens information for body transmission is generated (prepared). For example, when the lens information item requested by the camera body 100 is exit pupil position information, the first adapter communication unit 312 uses the data value calculated based on the focal length information input from the input unit 360. It is generated (prepared) as lens information for body transmission. The exit pupil position information when the focal length information is a variable X is estimated as a function (f (X)) of the focal length information (variable X), for example.

For example, when the lens information item requested by the camera body 100 is open F value information, the first adapter communication unit 312 uses the open aperture value input from the input unit 360 as body transmission lens information. Generate (prepare). For example, when the lens information item requested by the camera body 100 is focal length information, the first adapter communication unit 312 generates the focal length information input from the input unit 360 as body transmission lens information. (prepare.

(Lens information generation process)
Next, an example of generating exit pupil position information will be described as an example of processing for generating lens information.
FIG. 7 is a flowchart illustrating an example of transmission data (exit pupil position information) generation processing by the adapter 300.

In FIG. 7, when the exit pupil position information is requested as lens information from the camera body 100, first, the first adapter communication unit 312 first receives the focal length information X as information related to the specification of the interchangeable lens 200 from the input unit 360. Is acquired (step S2011).

Next, the first adapter communication unit 312 calculates exit pupil position information based on the focal length information X (step S2012). That is, the first adapter communication unit 312 calculates estimated data of exit pupil position information by a predetermined estimation calculation (function f (X)).

Next, the first adapter communication unit 312 generates (prepares) estimated data of the calculated exit pupil position information as body transmission lens information (step S2013).

Next, the first adapter communication unit 312 transmits the generated body transmission lens information to the camera body 100 through communication of the first data communication system D1b (step S2014).

The camera body 100 side that has received the “body transmission lens information” transmitted from the adapter 300 side (first adapter communication unit 312) as described above uses the received lens information as the camera body 100 side. Used for various controls performed in The usage form of the lens information on the camera body 100 side (camera control unit 110) will be described below.

First, on the camera body 100 side, the “exit pupil position information” is calculated based on the well-known focus aid control (that is, the defocus amount according to the manual focus operation, and the calculated defocus amount falls within the in-focus range. And control for displaying the in-focus state at that time so as to be visible to the user). Specifically, the camera control unit 110 uses exit pupil position information when calculating the defocus amount.

The camera control unit 110 also uses “AF correction information” (lens-specific optical axis direction correction amount on the image plane) when calculating the defocus amount, similar to the exit pupil position information.

On the camera body 100 side, “open F value information (open aperture value)” is used when performing an exposure value calculation in open photometry.

On the camera body 100 side, the “aberration correction information” is used when performing so-called aberration correction processing for correcting an image by image processing using various aberration (distortion aberration, etc.) information of the optical system. However, as already described in the above embodiment, when the fixed value “0” is received as the aberration correction information, the camera control unit 110 regards the image as “a lens having zero aberration”. Aberration correction by is not performed.

On the camera body 100 side, the “absolute distance information” is used when determining (calculating) the amount of shooting auxiliary light (flash light) emitted when shooting with shooting auxiliary light (so-called flash light). .

On the camera body 100 side, the focal length information is used as information to be recorded along with the photographed image data (for example, as Exif tag information) as photographing condition data recorded together with the image data as one of the photographing conditions. To do.

As described above, on the camera body 100 side, the lens information for body transmission prepared based on the information input by the input unit 360 is used for various controls performed on the camera body side. Therefore, by using the input unit 360 to communicate “lens information for body transmission” prepared as described above to the camera body side, an interchangeable lens that cannot communicate with the camera body 100 is used on the camera system. Even if it is attached to the camera body 100 via the adapter 300, the performance of the interchangeable lens can be appropriately functioned on the camera system.

As described above, the adapter 300 according to the present embodiment is provided separately from the first mount 301 on which the camera body 100 can be attached and detached, and the second mount 302 on which the interchangeable lens 200 can be attached and detached. And an adapter control unit 310 and an input unit 360. The adapter controller 310 can communicate with the camera body 100 attached to the first mount 301. The input unit 360 is configured to be able to input information regarding the specifications of the interchangeable lens 200. In addition, the adapter control unit 310 (first adapter communication unit 312) transmits body transmission lens information (for example, exit pupil position information) to be transmitted to the camera body 100 of the interchangeable lens 200 input from the input unit 360. It is generated (prepared) based on information related to specifications (for example, focal length information). Here, the lens information for body transmission is information requested from the camera body 100 as the lens information of the interchangeable lens 200 attached to the second mount 302.

As described above, in the adapter 300, the adapter control unit 310 generates (preparation) lens information for body transmission based on information regarding the specifications of the interchangeable lens 200 input from the input unit 360. Therefore, it is not necessary to acquire lens information from the interchangeable lens 200. Therefore, even if the adapter 300 in this embodiment is an interchangeable lens 200 (non-CPU lens) and a camera body 100 having different interchangeable lens specifications and communication standards, the adapter 300 is connected to the camera system 100 via the adapter 300. It can function properly. That is, the adapter 300 according to the present embodiment can cause various types of optical systems (for example, the interchangeable lens 200) to function appropriately on the camera system in a lens interchangeable camera system.

In the present embodiment, the adapter control unit 310 (first adapter communication unit 312) receives the body transmission lens information and information related to the specifications of the interchangeable lens 200 input from the input unit 360 (for example, focal length information X). Is generated (prepared) by a predetermined estimation calculation (for example, (function f (X)).
Thereby, the camera body 100 can acquire appropriate lens information (for example, exit pupil position information) according to information (for example, focal length information X) related to the specification of the interchangeable lens 200 instead of a fixed value.

In the present embodiment, the adapter control unit 310 (first adapter communication unit 312) inputs the lens information for body transmission without acquiring the lens information from the interchangeable lens 200 attached to the second mount 302. It is generated (prepared) based on information regarding the specifications of the interchangeable lens 200 input from the unit 360.

Thereby, the adapter control unit 310 (first adapter communication unit 312) acquires the lens information from the interchangeable lens 200 and the lens information acquired from the interchangeable lens 200 as data for communication with the camera body 100. There is no need to execute the conversion process. Therefore, the adapter 300 in the present embodiment can reduce the amount of calculation in the relay process when relaying communication between the interchangeable lens 200 and the camera body 100 having different communication standards. Further, since the adapter 300 in this embodiment does not convert communication data, the response time between the adapter 300 and the camera body 100 can be shortened.

For example, even for interchangeable lenses with completely different specifications and communication standards (for example, interchangeable lenses from different manufacturers), the adapter 300 in the present embodiment has information regarding the specifications of the interchangeable lens 200 input from the input unit 360. And lens information is generated based on the input information. Therefore, even if the interchangeable lens has completely different specifications and communication standards, the adapter 300 in the present embodiment can function properly on the camera system by being connected via the adapter 300.

In the present embodiment, the input unit 360 includes an operation unit 361 that can input information related to the specifications of the interchangeable lens 200 in accordance with the operation of the operator.
As a result, the operator can directly input information related to the specifications of the interchangeable lens 200 from the input unit 360. Therefore, the adapter 300 in this embodiment can improve the convenience when inputting information regarding the specifications of the interchangeable lens 200.

In the present embodiment, the information related to the specification of the interchangeable lens 200 includes information indicating the type of the optical system 220 provided in the interchangeable lens 200 (for example, focal length information).
The adapter control unit 310 (first adapter communication unit 312) generates (preparation) body transmission lens information based on information (for example, focal length information) indicating the type of the optical system 220 input from the input unit 360. To do.

Thereby, the adapter 300 in the present embodiment can obtain the lens information for body transmission without obtaining from the interchangeable lens 200. Therefore, even if the interchangeable lens has completely different specifications and communication standards, the adapter 300 in the present embodiment can function properly on the camera system by being connected via the adapter 300.

As described above, the interchangeable lens 200 in the first embodiment is a non-CPU lens, and the adapter control unit 310 does not perform communication with the interchangeable lens 200. In other words, the adapter control unit 310 outputs “body transmission lens information” based on the information input by the input unit 360 regardless of whether the interchangeable lens 200 is attached to the adapter 300 or not. It is possible to prepare and transmit it to the camera body 100. That is, the adapter control unit 310 prepares (generates) body transmission lens information and supplies the camera body 100 as long as power is received from the camera body 100 even when the second mount 302 is not mounted with an interchangeable lens. Can be sent to.

Next, other forms of the interchangeable lens will be described.
A lens that can be connected to the camera body 100 via the adapter 300 to function (can function as a photographing lens) is not limited to the interchangeable lens 200 described with reference to FIG. In addition to the interchangeable lens 200, various interchangeable lenses can be connected to the camera body 100 via the adapter 300 to function on the camera system.

[Second Embodiment]
In the present embodiment, an example in which the CPU lens is connected to the camera body 100 via the adapter 300 will be described.
FIG. 8 is a schematic block diagram showing an example of the configuration of the camera system 1A according to the present embodiment. In this figure, the camera body 100 and the interchangeable lens 200 </ b> A are mounted via an adapter 300. The camera body 100, the interchangeable lens 200A, and the adapter 300 are electrically connected to each other via connection terminals. Also, in the figure, the same reference numerals are given to portions corresponding to the respective portions in FIG. 3, and description thereof is omitted.

For example, the interchangeable lens 200A is an interchangeable lens that includes the lens control unit 210 but cannot communicate with the adapter 300 and the camera body 100 because the communication standard is different.
The interchangeable lens 200A is a lens that does not include the focus ring 260 and the diaphragm ring 255, and includes a lens control unit 210, an optical system driving unit 230, and electrical connection terminals (Td1 to Td7). 3 is different from the interchangeable lens 200 shown in FIG.
In the present embodiment, the aperture diameter of the interchangeable lens 200A can be changed by the aperture interlocking lever 350. Therefore, the aperture interlocking lever driving unit 330 moves the position of the aperture interlocking lever 350 under the control of the adapter control unit 310.

Next, the configuration of the interchangeable lens 200A will be described.
The interchangeable lens 200A includes a connection unit 201s (terminals Td1 to Td7), a lens control unit 210, an optical system 220, and an optical system driving unit 230.
Subject light (optical image) incident through the optical system 220 is guided to a light receiving surface of a well-known imaging element (not shown) provided in the camera body 100 through an adapter 300.
The optical system 220 includes a lens 221, a focus adjustment lens (hereinafter referred to as a focus lens) 222, and an image blur correction (anti-vibration) lens (hereinafter referred to as a VR (Vibration Reduction) lens) 223. And a diaphragm unit 250.

The diaphragm unit 250 includes a diaphragm mechanism 251 including a plurality of diaphragm blades and a diaphragm lever 252 that mechanically operates the diaphragm mechanism 251. Therefore, the aperture diameter of the interchangeable lens 200A changes as the aperture lever 252 mechanically operates the aperture mechanism 251. The interchangeable lens 200A in the camera system 1 shown in FIG. 8 is a lens that does not incorporate a power source such as an actuator that drives the diaphragm mechanism 251, and the diaphragm mechanism 252 of the adapter 300 is connected to the diaphragm mechanism 252 via the diaphragm lever 252. Reference numeral 251 denotes a lens to be driven.

The optical system driving unit 230 includes an AF (Auto Focus) driving unit 231, an AF encoder 232, and a VR driving unit 235.
The AF driving unit 231 drives the focus lens 222 under the control of the lens control unit 210. The AF encoder 232 detects the position of the focus lens 222 and supplies the detection result to the lens control unit 210.
The VR drive unit 235 drives the VR lens 223 under the control of the lens control unit 210.
The interchangeable lens 200A may include a focus ring that moves the position of the focus lens 222 when manually operated by the user.

The connection unit 201s includes seven connection terminals Td1 to Td7 as connection terminals connected to the seven connection terminals (terminals Tc1 to Tc7) of the connection unit 302s included in the adapter 300. When the adapter 300 and the interchangeable lens 200A are connected via the connecting portion 302s and the connecting portion 201s, the terminals Tc1 to Tc7 of the connecting portion 302s correspond to the terminals Td1 to Td7 of the connecting portion 201s, respectively. Connected to the connecting terminal.

The power source Vp to which the voltage of the optical system driving unit 230 is supplied is supplied through the terminal Td2.
Hereinafter, this power source Vp is referred to as a lens driving system power source Vp. The lens driving system power supply Vp is supplied from the power system power supply PWR via the adapter 300.
For example, the lens driving system power supply Vp is supplied from the terminal Td2 to the optical system driving unit 230 that consumes a large amount of power, such as an actuator that drives the focus lens 222 provided in the AF driving unit 231 and an actuator that drives the VR lens 223. Is supplied. A power system ground PGND that is a ground corresponding to the lens driving system power supply Vp is connected to the ground terminal of the optical system driving unit 230 and the terminal Td1.

A power supply Vc to which the voltage of the lens control unit 210 is supplied is connected to the terminal Td3. Hereinafter, this power source Vc is referred to as a lens control system power source Vc. The lens control system power supply Vc is supplied from the power system power supply PWR via the adapter 300.
The voltage of the lens control system power supply Vc is supplied to the control system circuit including the lens control unit 210 that consumes less power than the optical system drive unit 230 via the terminal Td3. A control system ground SGND that is a ground corresponding to the lens control system power supply Vc is connected to the ground terminal of the lens control unit 210 and the terminal Td7.
That is, the power system ground PGND and the control system ground SGND are not connected to each other in the interchangeable lens 200A and are separated into two systems of ground.

The lens control unit 210 includes an optical system control unit 211 and a first lens communication unit 212. The lens control unit 210 controls the optical system driving unit 230 and also controls communication of the first data communication system D1L with the adapter control unit 310 of the adapter 300 connected via the connection unit 201s.

The optical system control unit 211 controls the optical system drive unit 230. For example, the optical system control unit 211 initializes the optical system drive unit 230 according to the communication state with the adapter 300. Further, the optical system control unit 211 controls the optical system drive unit 230 so as to drive a drive element such as the focus lens 222 or the VR lens 223 according to the control of the camera control unit 110 via the adapter 300. Further, the optical system control unit 211 acquires information on the optical system (driving element) 220 supplied from the optical system driving unit 230 (for example, information such as the position of the focus lens 222 detected by the AF encoder 232).

The first lens communication unit 212 executes communication of the first data communication system D1L at an independent timing.
The first data communication system D1L is a communication system using serial interface half duplex communication. The first lens communication unit 212 performs communication of three types of signals R / W, CLK2, and DATA as the first data communication system D1L.
The signal R / W is a read / write signal indicating the communication direction of a data signal to be described later. The signal R / W is used as a signal for handshaking between the lens side and the adapter 300, and is transmitted and received between a first adapter communication unit 312 and a first lens communication unit 212, which will be described later, via a terminal Td4. . The signal CLK2 is a clock signal for serial communication. The signal CLK2 is transmitted (output) from the first adapter communication unit 312 to the first lens communication unit 212 via the terminal Td5. The signal DATA is a data signal transmitted / received between the first adapter communication unit 312 and the first lens communication unit 212 via the terminal Td6.

In this embodiment, the adapter power supply unit 320 of the adapter 300 supplies the voltage of the lens drive system power supply Vp to the optical system drive unit 230 of the interchangeable lens 200A via the terminal Tc2 and the terminal Td2. Further, the adapter power supply unit 320 supplies the voltage of the lens control system power supply Vc to the lens control unit 210 of the interchangeable lens 200A via the terminal Tc3 and the terminal Td3.

Thereby, the adapter 300 can set the voltage of the control system power supply Vcc1 supplied from the camera body 100 to the voltage supplied to the adapter control unit 310 without using the voltage supplied to the interchangeable lens 200A. The camera power supply unit 120 in the camera body 100 is configured to constantly supply the control system power supply Vcc1 (as long as there is a “supply request” from the connection destination) to the connection destination connected via the terminal Ta3. Has been. Therefore, the adapter control unit 310 connected to the terminal Ta3 via the terminal Tb3 can be always activated even if the power switch on the camera body 100 side is turned off. By always starting the adapter control unit 310, the setting state on the adapter 300 side (for example, whether or not the initialization process of the aperture interlock lever 350 has been completed) can be stored. There is an advantage that when the power switch on the 100 side is turned on, unnecessary initialization processing is not required in the adapter 300.

Although not described in the present embodiment, when a camera body activation switch that can be operated by the user on the adapter 300 side (a switch for switching the power ON / OFF on the adapter 300 side) is provided, the activation switch Since the ON operation can be constantly monitored, it is possible to configure a system in which the camera body 100 is activated by an operation on the adapter 300 side (by the way, the control system power supply Vcc1 is connected to the lens so that the lens control unit 210 is always activated. When the system configuration for transmitting to the control unit 210 is adopted, even if an operation switch for activating the camera body 100 is provided on the interchangeable lens 200A side, the activated state is present between both the interchangeable lens 200A and the camera body 100. Adapter 300 is not installed (because power is not supplied) Will be. Thus, it is not possible to convey the operation of the operation switch of the interchangeable lens 200A side to the camera body 100. side, you can not activate the camera body 100).

Furthermore, the adapter power supply unit 320 supplies the voltage of the diaphragm driving power source Vm in the adapter 300 to the diaphragm interlocking lever driving unit 330. That is, the adapter 300 generates a voltage to be supplied to the aperture interlocking lever driving unit 330 from the voltage of the power system power supply PWR supplied from the camera body 100. Power system power supply PWR is sufficiently larger in power supply than control system power supply Vcc1. Therefore, the power system power supply PWR can be used for power supply to various circuits, and even if a voltage for supplying power from the power system power supply PWR to the aperture interlocking lever driving unit 330 is created as in the present embodiment (power system power supply). Even if the power supply PWR is also used, the operation of other circuits to which the power is used (for example, the operation of the lens control unit 210 described above) is not adversely affected.

The terminal Tb1 is connected to the terminal Ta1 of the camera body 100. Thereby, the power system ground PGND is connected to the terminal Tb1 via the terminal Ta1. Further, the terminal Tb1 and the terminal Tc1 are connected as a power system ground PGND in the adapter 300. Further, the terminal Tc1 is connected to the terminal Td1 of the interchangeable lens 200A. Thereby, the power system ground PGND is connected to the terminal Td1 via the terminal Tc1 as a ground corresponding to the lens driving system power supply Vp. The power system ground PGND is also connected as a ground for the adapter power supply unit 320, the diaphragm interlocking lever driving unit 330, and the like.

The terminal Tb8 is connected to the terminal Ta8 of the camera body 100. Thus, the control system ground SGND is connected to the terminal Tb8 via the terminal Ta8. The terminal Tb8 and the terminal Tc7 are connected as a control system ground SGND in the adapter 300. Further, the terminal Tc7 is connected to the terminal Td7 of the interchangeable lens 200A. Thereby, the control system ground SGND is connected to the terminal Td7 via the terminal Tc7 as a ground corresponding to the lens control system power supply Vc. The control system ground SGND is also connected as a ground for the adapter control unit 310.

Thus, the power system ground PGND and the control system ground SGND are not connected to each other in the adapter 300 and are separated into two systems of ground.
That is, in the interchangeable lens 200A and the adapter 300, the power system ground PGND and the control system ground SGND are not connected to each other and are separated into two systems of ground. However, the power system ground PGND and the control system ground SGND, which are separated into two systems, are connected in the camera body 100 and have the same potential as the negative electrode of the battery 190. Accordingly, the grounds of the camera control unit 110, the lens control unit 210, and the adapter control unit 310 are connected to the control system ground SGND and have the same potential.
Therefore, it is possible to reduce the influence of noise generated in the power system ground PGND on the control system ground SGND.

In the interchangeable lens 200A, the control system ground SGND may be connected to a conductive portion (interchangeable lens housing) of the lens side mount 201. Further, the terminal Td7 to which the control system ground SGND is connected in the interchangeable lens 200A may be included in the conductive portion of the lens side mount 201. Similarly, in the adapter 300, the control system ground SGND may be connected to the conductive part of the second mount 302. In addition, the terminal Tc7 to which the control system ground SGND is connected in the adapter 300 may be included in the conductive portion of the second mount 302.
Further, similarly, the terminal Tb8 may be connected to the conductive portion of the first mount 301, and the terminal Tb8 may be included in the conductive portion of the first mount 301. Similarly, the terminal Ta8 may be connected to the conductive portion of the camera body side mount 101, and the terminal Ta8 may be included in the conductive portion of the camera body side mount 101.

Next, processing according to the present embodiment will be described.
The outline of the state transition according to this embodiment is the same as the processing of the first embodiment shown in FIG. In this embodiment, the command data communication communication sequence in the lens steady process and the transmission data (exit pupil position information) generation process by the adapter 300 are the same as the processes shown in FIGS.
That is, also in the present embodiment, as in the first embodiment, in the “lens steady process”, the first adapter communication unit 312 does not perform the first regular communication that communicates with the interchangeable lens 200A, and the camera Second regular communication is performed to communicate with the camera control unit 110 included in the body 100. For example, when the lens information can be estimated, the first adapter communication unit 312 determines the lens information for body transmission based on information related to the specification of the interchangeable lens 200A input from the input unit 360 (for example, focal length information). Is generated (prepared). In addition, when the lens information cannot be estimated, the first adapter communication unit 312 reads a fixed value stored in advance in the storage unit 340, and uses the read fixed value as lens information to obtain lens information for body transmission. Generate (prepare).

As described above, the adapter 300 according to the present embodiment includes the interchangeable lens 200A input from the input unit 360 by the adapter control unit 310 (first adapter communication unit 312) even when the interchangeable lens 200A is a CPU lens. Since the lens information for body transmission is generated (prepared) based on the information related to the specifications, it is not necessary to acquire lens information from the interchangeable lens 200A. Therefore, even if the adapter 300 in this embodiment is the interchangeable lens 200A (CPU lens) and the camera body 100 having different interchangeable lens specifications and different communication standards, the adapter 300 is appropriately functioned by being connected via the adapter 300. be able to. In other words, the adapter 300 according to the present embodiment can appropriately function various types of optical systems (for example, the interchangeable lens 200A) in the interchangeable lens camera system.

The adapter 300 is exchanged because the adapter control unit 310 (first adapter communication unit 312) generates (prepares) body transmission lens information based on information regarding the specifications of the interchangeable lens 200A input from the input unit 360. It is not necessary to convert the lens information acquired from the lens 200 </ b> A into data for communication with the camera body 100. Therefore, the adapter 300 in the present embodiment can reduce the amount of calculation in the relay process when relaying communication between the interchangeable lens 200A and the camera body 100 having different communication standards. In addition, since the adapter 300 in this embodiment does not convert the data for communication, the response time between the adapter 300 and the camera body 100 can be shortened.

As described above, the interchangeable lens 200A in the second embodiment is an interchangeable lens having a communication standard different from that of the adapter 300 and the camera body 100, and the adapter control unit 310 does not execute communication with the interchangeable lens 200A. . In other words, the adapter control unit 310 outputs “body transmission lens information” based on the information input by the input unit 360 regardless of whether the interchangeable lens 200A is attached to the adapter 300 or not. It is possible to prepare and transmit it to the camera body 100. That is, the adapter control unit 310 prepares (generates) body transmission lens information and supplies the camera body 100 as long as power is received from the camera body 100 even when the second mount 302 is not mounted with an interchangeable lens. Can be sent to.

In the present embodiment, the description has been given of the form in which the interchangeable lens 200A is an interchangeable lens that cannot communicate with the adapter 300 and the camera body 100 because the communication standards are different. However, the interchangeable lens 200A may be configured to be able to communicate with the adapter 300. For example, when the adapter control unit 310 (the first adapter communication unit 312) can communicate with the interchangeable lens 200A attached to the second mount 302, the adapter control unit 310 can communicate with the interchangeable lens 200A. A mode in which the process of transmitting is executed and the process of receiving from the interchangeable lens 200A is not executed may be employed.
Thereby, the adapter 300 according to the present embodiment can reduce the amount of calculation in the relay process when relaying communication between the interchangeable lens 200A and the camera body 100 having different communication standards while controlling the interchangeable lens 200A. .

Further, for example, the adapter control unit 310 (first adapter communication unit 312) transmits any of the information of the camera body 100, the information of the adapter 300, and the control command to the interchangeable lens 200A to the interchangeable lens 200A. A mode in which processing is executed and processing for receiving lens information from the interchangeable lens 200A is not executed may be employed.
Thereby, the adapter 300 in this embodiment does not receive lens information from the interchangeable lens 200A while controlling the interchangeable lens 200A. Therefore, when relaying communication between the interchangeable lens 200A and the camera body 100 having different communication standards, the amount of computation in the relay process can be reduced.

In addition, this invention is not limited only to said each embodiment, It can change in the range which does not deviate from the meaning of this invention. For example, in each of the embodiments described above, the input unit 360 has been described as including the operation unit 361 and the display unit 362, but is not limited thereto. For example, the input unit 360 may include an interface unit that communicates with an external input device by wireless communication or wired communication, and may not include the operation unit 361 and the display unit 362. In addition, the input unit 360 has been described with respect to the form in which the aperture value and focal length information are input. However, the input unit 360 may have a form in which at least one piece of information is input, or may have a form in which other information (for example, the above-described lens information such as aberration information) is input.
Further, the input unit 360 may have a configuration in which a plurality of input switches are provided for each input information, or a menu is displayed on the display screen of the display unit 362 or the display unit 150 of the camera body 100, and an input is made from the menu display. It is also possible to use a form in which items can be selected. The input unit 360 may be a touch panel type input unit 360.
In addition to the key switch, the operation button, and the like, the operation unit 361 inputs information regarding the specification of the interchangeable lens 200 (200A) or the predetermined information (or information value) by a configuration such as a diaphragm ring. A form selected from among them may be used.

Further, the input unit 360 may include a selection unit that selects any of information (for example, values of focal length information) related to specifications of the plurality of interchangeable lenses 200 (200A) prepared in advance.
In this case, the input unit 360 does not directly select information related to the specification of the interchangeable lens 200 (200A), but uses information (for example, a number) corresponding to information related to the specification of the interchangeable lens 200 (200A). The form which an operator selects with a selection part may be sufficient. For example, the number selected by the selection unit and information related to the specification of the interchangeable lens 200 (200A) are associated with each other and stored in the storage unit 340. In this case, the adapter control unit 310 may generate (prepare) information related to the specification of the interchangeable lens 200 (200A) as body transmission lens information based on the number selected by the selection unit. That is, the adapter control unit 310 reads out information related to the specification of the interchangeable lens 200 (200A) stored in the storage unit 340 based on the number selected by the selection unit, and generates (preparation) information as body transmission lens information. May be.

Further, in each of the above embodiments, as an example, an embodiment has been described in which exit pupil position information is estimated as lens information from focal length information, but the present invention is not limited to this. For example, another lens information may be estimated based on information related to specifications of another interchangeable lens 200 (200A). Further, the lens information may be estimated based on a plurality of pieces of lens information. In this case, the adapter control unit 310 further includes body transmission lens information, predetermined lens information stored in the storage unit 340 provided in the adapter 300, and the interchangeable lens input from the input unit 360. You may produce | generate (preparation) based on the information regarding a specification.

In each of the above embodiments, the information related to the specification of the interchangeable lens 200 (200A) includes information indicating the type of the optical system 220 included in the interchangeable lens 200, and information indicating the type of the optical system 220 includes Although an example of an open aperture value or focal length information has been described, the present invention is not limited to this.
For example, the information indicating the type of the optical system 220 may include one of information indicating the optical characteristics of the optical system 220 and information indicating the function of the optical system 220. In this case, the adapter control unit 310 generates (prepares) body transmission lens information based on information indicating the type of the optical system input from the input unit 360. Further, the information indicating the type of the optical system 220 may include any one of information indicating the focal length of the optical system (focal length information) and information indicating the open F value (open aperture value). Good.

As described above, according to the present embodiment, various types of optical systems can be appropriately functioned in the interchangeable lens camera system.

3 and 8 is not limited to the configuration in which the interchangeable lens 200 (200A) and the camera body 100 are connected via the adapter 300 only.
For example, the interchangeable lens 200 (200A) and the camera body 100 may be connected to the interchangeable lens 200 (200A) via an adapter 300 and another conversion adapter (such as a teleconverter).
Moreover, although the adapter 300 of the said embodiment is a structure which is not provided with an optical system, it is good also as a structure provided with the optical system.

3 and FIG. 8, the camera control unit 110, the lens control unit 210, or the adapter control unit 310 may be realized by dedicated hardware, and may be a memory and a CPU (Central Processing). Unit), and the functions for realizing the functions of the camera control unit 110, the lens control unit 210, and the adapter control unit 310 described above are loaded into a memory and executed, thereby realizing the functions. There may be.

In addition, a program for realizing the functions of the camera control unit 110, the lens control unit 210, or the adapter control unit 310 is recorded on a computer-readable recording medium, and the program recorded on the recording medium is stored in the computer. The processing of each unit described above may be performed by reading and executing the system. Here, the “computer system” includes an OS and hardware such as peripheral devices.

Further, the “computer system” includes a homepage providing environment (or display environment) if a WWW system is used.
The “computer-readable recording medium” refers to a storage device such as a flexible medium, a magneto-optical disk, a portable medium such as a ROM or a CD-ROM, and a hard disk incorporated in a computer system. Furthermore, the “computer-readable recording medium” dynamically holds a program for a short time like a communication line when transmitting a program via a network such as the Internet or a communication line such as a telephone line. In this case, it also includes those that hold a program for a certain period of time, such as a volatile memory inside a computer system serving as a server or client in that case. The program may be a program for realizing a part of the functions described above, and may be a program capable of realizing the functions described above in combination with a program already recorded in a computer system.

As described above, the embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and includes design and the like within a scope not departing from the gist of the present invention.

1, 1A camera system, 100 camera body, 110 camera control unit, 200, 200A interchangeable lens, 210 lens control unit, 220 optical system, 230 optical system drive unit, 251 aperture mechanism (diaphragm), 300 adapter, 301 first mount (First mount part), 302 second mount (second mount part), 310 adapter control part, 312 first adapter communication part, 320 adapter power supply part, 330 aperture interlock lever drive part, 340 storage part, 350 aperture interlock lever 360 input unit, 361 operation unit

Claims (11)

A first mount part to which the camera body can be attached and detached;
A second mount part that is provided separately from the first mount part and to which the interchangeable lens can be attached and detached;
An adapter control unit capable of communicating with the camera body mounted on the first mount unit;
An input unit capable of inputting information about the interchangeable lens without going through the interchangeable lens,
The adapter controller is
An adapter for preparing body transmission lens information to be transmitted to the camera body based on information on the interchangeable lens input from the input unit. The adapter according to claim 1,
The adapter controller is
The lens information for body transmission requested from the camera body as the lens information of the interchangeable lens mounted on the second mount unit is generated based on information regarding the specifications of the interchangeable lens input from the input unit. And
An adapter, wherein the generated lens information for body transmission is transmitted to the camera body. The adapter according to claim 1,
The adapter controller is
An adapter characterized in that the body transmission lens information is prepared by performing a predetermined estimation calculation based on information on the interchangeable lens input from the input unit. The adapter according to any one of claims 1 to 3,
The adapter controller is
The lens information for body transmission is generated based on the information regarding the specification of the interchangeable lens input from the input unit without acquiring lens information from the interchangeable lens mounted on the second mount unit. Adapter characterized by. The adapter according to claim 1,
The adapter controller is
The body transmission lens information is prepared based on predetermined lens information stored in a storage unit provided in the adapter and information on the interchangeable lens input from the input unit. Adapter. The adapter according to any one of claims 1 to 3 and 5,
The information regarding the interchangeable lens includes information indicating the type of optical system included in the interchangeable lens,
The adapter controller is
The adapter, wherein the lens information for body transmission is prepared based on information indicating the type of the optical system input from the input unit. The adapter according to claim 6,
The information indicating the type of the optical system includes any one of information indicating an optical characteristic of the optical system and information indicating a function of the optical system. The adapter according to claim 7,
The information indicating the type of the optical system includes any one of information indicating a focal length of the optical system and information indicating an open F value. The adapter according to any one of claims 1 to 3 and 5,
The input unit is
An adapter comprising: an operation unit capable of inputting information relating to the interchangeable lens in accordance with an operation by an operator. The adapter according to any one of claims 1 to 9, and
The camera body attached to the first mount;
The interchangeable lens mounted on the second mount part;
A camera system comprising: An adapter control unit provided in an adapter having a first mount part to which the camera body can be attached and detached, and a second mount part that is provided separately from the first mount part and to which the interchangeable lens can be attached and detached. An adapter control program for controlling operation,
Preparing body transmission lens information to be transmitted to the camera body based on information about the interchangeable lens input from the input unit;
Transmitting the prepared lens information for body transmission to the camera body;
Adapter control program that causes a computer to execute

Images