JP4050385B2 - Electronic imaging device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a manual focus (including an electric manual focus called power focus) of an electronic imaging apparatus.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, there has been known a camera device that performs quick and reliable focusing by manual focus (including power focus) while confirming a focus state by a focus state detection means (Japanese Patent Laid-Open No. 6-113184). Issue gazette)
[0003]
.
[Problems to be solved by the invention]
However, when a focus state is detected in such a conventional camera device, the focus detection range is often fixed at a predetermined position in the imaging region.
[0004]
On the other hand, there is also known a camera device that detects the in-focus state at an arbitrary position in the shooting area. In this case, the in-focus state is detected by reading the video signal and detecting the contrast state of the video signal. In this method, it takes time to read out and calculate the video signal, and it is difficult to perform high-speed and reliable manual focus control. In order to solve this problem, it is conceivable to separately provide a focus detection device such as phase difference detection capable of high-speed processing instead of focusing state detection by the contrast method using the video signal. The device becomes complicated and expensive.
[0005]
On the other hand, if the moving image of the subject in manual focus can be confirmed with an electronic finder or the like, the above-described in-focus state detecting means is not required, the apparatus is simplified, and the cost is reduced. However, in this conventional method, it is difficult to confirm the in-focus state, and it takes time to perform reliable manual focus adjustment.
[0006]
As described above, conventionally, focus adjustment cannot be performed quickly and reliably during manual focus.
[0007]
An object of the present invention is to provide an electronic imaging apparatus capable of quickly and surely performing manual focus control with a simple configuration in order to solve the above-described problems of the prior art.
[0008]
[Means for Solving the Problems]
  The electronic imaging device according to the first invention is capable of manual focus as described in claim 1,A display in which a first image obtained by enlarging a predetermined part of the captured image to the entire screen and a second image obtained by reducing the entire captured image to a part of the screen are simultaneously displayed on the same screen. And at the time of manual focus, at least the first image of the first and second images is a control means for displaying a moving image,It is equipped with.
[0016]
  First1In this invention, during manual focus, an image obtained by reducing the entire image for angle-of-view adjustment before enlargement and a focus image obtained by enlarging a part of the entire image on the entire screen are combined and displayed. In addition to being able to confirm the focus accurately, it is possible to simultaneously confirm the angle of view of the entire captured image.
[0017]
  First2The invention claims2As described in1'sIn the electronic imaging apparatus, a focus state display means for displaying a focus state based on the image signal of the enlarged display area is provided during manual focus.
[0018]
  First2In the above-described invention, when the enlarged image for focusing is displayed on the display unit (monitor) during manual focus, the focus state is displayed based on the image signal of the enlarged display area. Matching can be performed more reliably. As the focus state display means, the lens position (distance) obtained by calculation from the zoom tracking curve is displayed, or the evaluation value (integral value of the high frequency component extracted from the imaging signal) is displayed.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the invention will be described with reference to the drawings.
FIG. 1 is a block diagram showing an electronic imaging apparatus according to an embodiment of the present invention. In this embodiment, an electronic imaging apparatus having an auto-focus (hereinafter referred to as AF) function and an electric manual focus function, that is, a power focus (hereinafter referred to as PF) function will be described.
[0020]
In FIG. 1, the electronic imaging apparatus includes a lens unit 10, a CCD 20, which is an imaging element, an imaging unit 30, a recording unit 40, a card access unit 41, a memory card 42, a playback unit 50, and a power focus. Switch circuit 60 for switching between autofocus and auto-focus, electronic zoom circuit 61, on-screen circuit (OSD) 62, liquid crystal monitor 63 as a display unit, lens control unit 70, and system control unit as control means 80, various switches 90, a DC power supply 100, a power supply circuit 101, a power switch 102, a strobe charge / light emission control unit 110, and a strobe light emission unit 111.
[0021]
The lens unit 10 includes a zoom lens 11 and a focus lens 12, and the imaging unit 30 includes an amplification unit (AMP) 31, a sample / hold circuit (S / H) 32, and an analog / digital converter (A / D) 33. And an exposure / focus (AE / AF) data creation circuit 34 and an imaging unit timing generator 35.
[0022]
The lens control unit 70 includes a motor drive pulse generator 71, a zoom driver 72, a zoom step motor 73, a focus driver 74, and a focus step motor 75.
[0023]
The mechanism and circuit of each part will be described below.
The zoom lens 11 constituting the lens unit 10 is movable along the optical axis by the zoom mechanism, and the focus lens 12 is movable along the optical axis by the focus mechanism. A one-chip CCD (charge coupled device) 20 that is an image pickup device is disposed on the optical axis of the lens unit 10, and a photographed image of a subject (not shown) photographed by the lens unit 10 is stored in the CCD 20. An image is formed on the imaging surface.
[0024]
The CCD 20 is driven by an imaging unit timing generator 35 and its imaging operation is controlled.
[0025]
The image signal photographed and photoelectrically converted by the CCD 20 is amplified to a predetermined level by the amplifying unit 31, sampled / held by the sample / hold circuit 32, and a signal value for each pixel is output. The converter 33 converts the analog signal into a digital signal. The digitized image signal is supplied to the recording unit 40 while being supplied to the AE / AF data creation circuit 34.
[0026]
The recording unit 40 processes the digitized image signal into a recording signal and records it on the memory card 42 through the card access unit 41. During shooting in the AF mode, the card access unit 41 records an image signal on the memory card 42 under the control of the system control unit 80, and at the same time passes through the playback unit 50 and further the second input end b of the switch circuit 60 and the electronic zoom circuit 61. In addition, the image being photographed is displayed on the liquid crystal monitor 63 through the on-sleeve circuit 62. Of course, after the image signal is once recorded in the memory card 42 and the play (PLAY) button is pressed, the card access unit 41 controls the image signal recorded in the memory card 42 under the control of the system control unit 80. It can be read out and reproduced by the reproducing unit 50, and a reproduced image can be displayed on the liquid crystal monitor 63 through the second input terminal b of the switch circuit 60, the electronic zoom circuit 61, and the on-screen circuit 62.
[0027]
The AE / AF data creation circuit 34 obtains AE data as exposure information by the AE data creation means from the luminance signal component extracted by the luminance signal component extraction circuit provided therein, and system-controls the obtained AE data. While supplying to the unit 80, the extracted luminance signal component is supplied to an AF data generating means composed of a high-pass filter and an integrator, and only the high-frequency component is extracted using the high-pass filter. The components are integrated using an integrator to obtain AF data as focus information, and the obtained AF data is supplied to the system control unit 80. The system control unit 80 calculates aperture control information based on the AE data and supplies it to an aperture mechanism (not shown). When the AF mode is set (the AF mode setting corresponds to an initial state in which the PF mode of the various switches 90 does not set the PF mode), the focus control mechanism 80 Based on the AF data obtained with the above operation, a calculation called a hill-climbing method is performed, and focus control information is generated based on the calculation, and is supplied to the pulse generator 71 of the lens control unit 70. As a result, it is possible to drive the step motor 75 through the focus driver 74 and automatically set the focus lens 12 to the in-focus position.
[0028]
The image signal digitized by the imaging unit 30 is also supplied to the first input terminal a of the switch circuit 60. The switch circuit 60 is controlled so as to be alternately switched to the first input terminal a or the second input terminal b each time the PF button of the various switches 90 is pressed, and when switched to the first input terminal a, The digitized image signal from the imaging unit 30 is supplied to the on-screen circuit 62 through the electronic zoom circuit 61 and displayed on the liquid crystal monitor 63. When switched to the second input end b, the reproduction signal from the reproduction unit 50 is supplied to the on-sleene circuit 62 through the electronic zoom circuit 61 and displayed on the liquid crystal monitor 63.
[0029]
The electronic zoom circuit 61 switches the switch circuit 60 to the first input terminal a when the PF button is pressed, and at the same time, focuses on the subject image being photographed by a control signal from the system control unit 80 at a predetermined position (for example, a focus mark). Are controlled to be enlarged and displayed at a predetermined display magnification. When the playback (PLAY) button is pressed, the electronic zoom circuit 61 normalizes the image from the playback unit 50 by the control signal from the system control unit 80 at the same time when the switch circuit 60 is switched to the second input terminal b. Control the output so that it is displayed in a small (or enlarged) size.
[0030]
The on-sleeve circuit 62 thins out the number of pixels of the image signal photographed by the CCD 20 because the number of pixels of the liquid crystal monitor 63 is as small as 60,000 to 200,000 pixels while the CCD 20 has 400,000 to 1.3 million pixels, for example. This is a circuit for supplying the liquid crystal monitor 63.
[0031]
An appropriate DC voltage can be supplied to each circuit from the power supply circuit 101 to the system control unit 80 based on the DC power supply 100. When the strobe button of the various switches 90 is pressed (that is, when the strobe mode is set), a charging current is supplied to the strobe charging / flash control unit 110 to charge the main capacitor CM. When a shutter release button (not shown) is pressed, the strobe light emitting unit 111 emits light under the control of the system control unit 80 to illuminate the subject.
[0032]
The system control unit 80 is constituted by a microcomputer (CPU, ROM, and RAM), and receives various signals from the device units 34, 35, 41, 101, 110 and various switches 90 to perform various arithmetic controls. A control signal is supplied to each part 35, 41, 50, 60, 61, 62, 71, 102, 110, etc. of the apparatus. Further, the system control unit 80 displays the display set by the display magnification setting means (see the description of FIG. 7) around the predetermined position of the image designated by the instruction means (see the description of FIG. 7) during the PF. Control is performed to enlarge the moving image of the subject at the magnification and display it on the liquid crystal monitor 63 as a display unit. Alternatively, the system control unit 80 causes the liquid crystal monitor 63, which is a display unit, to display a first image obtained by enlarging a predetermined partial area of the captured image over the entire screen and the entire captured image as a part of the screen. Control to simultaneously display the second image reduced to the same screen on the same screen, and at the time of PF, control so that at least the first image of the first and second images displays a moving image. To do.
[0033]
FIG. 2 shows an appearance (back side) of an electronic camera used as the electronic imaging apparatus of FIG. As the above-described various switches 90, a zoom button 91 for zooming the zoom lens 11, a playback button 92 for reproducing recorded images, a menu button 93 for performing various settings, and a PF button for setting the PF mode 94, a shutter release button 95 for starting shooting, a cross key 96 for selecting and confirming items at the time of various settings, and a display of captured images and a menu display at the time of various settings are provided. A liquid crystal monitor 63 for performing an operation and an electronic viewfinder 300 for performing an angle adjustment are provided.
[0034]
Next, the operation of the present invention will be described.
When shooting is performed, the electronic imaging apparatus is first turned on, and then the subject is captured in the electronic viewfinder 300 for observation of the shooting angle of view. Normally, after the power is turned on, the AF mode is initially set, so that the captured image passes through the recording unit 40, the card access unit 41, the playback unit 50, and the second input terminal b of the switch circuit 60. Is displayed on the liquid crystal monitor 63. Alternatively, after the power is turned on, the PF button of the various switches 90 is pressed to perform the PF switching operation to switch to the PF mode.
[0035]
Here, the case where it switches to PF mode is demonstrated. The PF switching process and the PF process will be described with reference to FIGS. As described above, every time the PF button is pressed, the state of the PF mode and the AF mode is reversed. For example, as shown in FIG. 4, the switch arrangement necessary for the PF processing is a cross key 96 (right and left keys R and L, up and down keys U and so on) arranged near a menu switch (MENU) 93. D, and Ocake-OK). That is, in the PF, it is necessary to move the focus lens 12 by the focus driving means (71, 74, 75) and stop the lens at a focused position. ˜∞) is changed using the left key (L) and right key (R) of the cross key 96.
[0036]
The PF switching process is performed only when the PF key is pressed. As shown in FIG. 3, it is determined whether or not the PF mode is currently set (step S11). If the PF mode is selected, the AF mode is set. The lens unit 10 is initialized (steps S12 and S13). If it is not the PF mode in step S11, the PF mode is set (step S14).
[0037]
In the PF process after entering the PF mode, as shown in FIG. 5, first, it is determined whether or not the write key (R) is on (step S21), and if the write key (R) is on, It is determined whether or not the lens position of the focus lens is close (this is the shortest possible distance from the front of the lens unit to the subject and is 0.6 m in the normal mode) (step S22). If so, the lens position is fixed close (step S23), the lens is stopped (step S34), and the display on the liquid crystal monitor 63 is returned to the original display (not the enlarged display for focus) (step S35). . This is because it is meaningless to perform PF (power focus) at the closest position. In step S22, if the lens position is not close, a moving image of the subject is enlarged and displayed on the liquid crystal monitor 63 at a predetermined magnification around a predetermined position (for example, a focus mark) of the subject captured image.
[0038]
Note that the magnification of the monitor enlargement display is set before shifting to the PF mode in FIG. That is, when the menu key (MENU) is pressed at least once, the liquid crystal monitor 63 operates as a menu display unit under the control of the system control unit 80, and a plurality of display magnifications (for example, x1, x2, etc.) are displayed on the display screen. X4, x8) is displayed in the menu, and the display magnification is selected and confirmed from among the display magnifications, for example, by operating the up key (U) or down key (D) and ocake (OK) on the cross key 96 described above. Then, a control value corresponding to the display magnification is set in the electronic zoom circuit 61. When the PF button is pressed after setting, the mode is shifted to the PF mode (the operation described with reference to FIG. 3).
[0039]
After the monitor enlarged display in step S24, the lens is driven in the closest direction (step S25), and it is determined whether or not the lens position is close (step S26). If the lens position is close, the above-described steps S23 and S34 are performed. , S35 is executed. If the lens position is not close in step S26, steps S25, S26, and S27 are repeated until the light key (R) is released, that is, until the finger is released from the light key (R). When the adjustment is made and the finger is released from the light key (R), the process proceeds to steps S34 and S35, the lens driving of the focus lens 12 is stopped, and the monitor display is restored.
[0040]
That is, in step S27, it is determined whether or not the light key (R) is on. If the light key (R) has not been pressed, the above-described steps S34 and S35 (return the lens stop and monitor display) are performed. Execute. If the light key (R) has been pressed, the process returns to step S25, and the operation for driving the lens in the closest direction is continued.
[0041]
In the PF process, if the right key (R) is off in step S21 described above, it is determined in step S31 whether the left key (L) is on. If the left key (L) is ON in step S31, it is determined whether the lens position of the focus lens 12 is at infinity (∞), as in steps S22 to S27, S34, and S35 described above (step S32). S32 to S39 are executed.
[0042]
If the left key (L) is turned on in step S31, it is determined whether or not the lens position of the focus lens 12 is at infinity (step S32). If it is already at infinity, the lens position is fixed at infinity. (Step S33), the lens is stopped (Step S34), and the display on the liquid crystal monitor 63 is returned to the original display (not the enlarged display for focus) (Step S35). This is because it is meaningless to perform PF at the infinity position. If the lens position of the focus lens 12 is not infinite in step S32, the moving image of the subject is enlarged and displayed on the liquid crystal monitor 63 at a predetermined magnification with a predetermined position (for example, a focus mark) of the subject captured image as the center. .
[0043]
After the monitor enlargement display in step S36, the lens is driven in the direction of infinity (step S37), and it is determined whether or not the lens position is at infinity (step S38). S33, S34 and S35 are executed. If the lens position is not infinite at step S38, steps S37, S38, and S39 are repeated until the left key (L) is released, that is, until the finger is released from the left key (L). When the finger is released from the left key (L), the process proceeds to steps S34 and S35, the lens driving of the focus lens 12 is stopped, and the monitor display is restored.
[0044]
As described above, in the present embodiment, based on the operation of the PF button, the system control unit 80 as a control unit can switch between PF that is manual focus and AF that is autofocus. At this time, control is performed so that the moving image of the subject enlarged at a predetermined magnification is displayed on the liquid crystal monitor 63 serving as a display unit than at the time of AF.
[0045]
Therefore, when the focus mode is switched from the AF mode to the PF mode by operating the PF button at the time of shooting, the captured image is displayed on the liquid crystal monitor 63 as shown in FIG. As shown in FIG. 5, an image enlarged at a predetermined display magnification about a predetermined position of the image is displayed. The user moves the focus lens 12 back and forth with respect to the subject by operating the right key (R) or the left key (L) of the cross key 96 shown in FIG. 4 while viewing the enlarged display in FIG. 6 (b). To focus.
[0046]
In the enlarged display screen of FIG. 6 (b), a graph display unit 201 as a focus state display means is simultaneously created and displayed in a bar shape or a strip shape in the horizontal direction on the screen, and the lens position (in the graph display unit 201). Indicator 202) is shown. This is a display of the lens position obtained by calculation from the zoom tracking curve in the system control unit 80, and the user can determine the focus state while referring to the display of this lens position. For example, as shown in FIG. 6B, when the shooting range (from the front of the lens) is 0.6 m (closest) to ∞ (infinite), the enlarged subject, for example, “tree” shown in the figure. If the index (indicating the lens position obtained by the calculation) 202 in the graph display unit 201 is 1 m, the distance to the focus lens 12 can be determined to be strange. By operating the left key (L) of the key 96 to move the focus lens 12 in the infinity (∞) direction, the focus lens is adjusted so that the index 202 is at a position corresponding to 20 m. In this way, when focus adjustment is performed using the L and R keys of the cross key 96, the in-focus state is more accurately determined based on the focus state of the enlarged image display and the lens position displayed in a graph on the graph display unit 201. Judgment can be made. That is, the user only needs to adjust the PF so that the magnified image becomes the clearest while referring to the lens position displayed on the graph display unit.
[0047]
In addition to the above, the present embodiment further includes display magnification setting means for setting a display magnification of an image to be enlarged and displayed on the liquid crystal monitor 63 at the time of PF, and enlargement display on the liquid crystal monitor 63 at the time of PF. Instruction means for designating the position of the image to be performed is provided.
[0048]
By pressing the menu key (MENU) (see FIG. 4) at least once, the system control unit 80 can perform menu display as shown in FIG. 7 on the display screen of the liquid crystal monitor 63. In FIG. 7, a plurality of display magnifications (for example, x1, x2, x4, and x8) are displayed as options (display magnification setting means), and when the monitor display screen is divided into four, for example, PF A plurality of image positions (five parts in the upper left, lower left, lower right, upper right, and center in FIG. 7) that are sometimes enlarged and displayed are displayed as options (instruction means). In order to select and confirm a desired display magnification and image position from among the plurality of display magnifications and image positions displayed in the menu in FIG. 7, the cross key 210 shown in FIG. 4 is used. To select the display magnification (× 4), press the left key (L) to move the cursor to the PF × column, and then move the cursor up and down with the up key (U) or the down key (D). 4. Set to 4 and confirm with ocake (OK). Next, in order to select the lower left image position, the light key (R) is pressed to move the cursor to the column of the PF position, and then the cursor is moved up and down with the up key (U) or the down key (D). Position the cursor to the second from the top, and confirm with the ocake (OK). After that, if the PF button is pressed, the image corresponding to the lower left position of the entire screen is displayed on the display screen of the liquid crystal monitor 63 from the entire screen of the angle adjustment in FIG. 8A before the PF mode is set (in the AF mode). A screen as shown in FIG. To focus on the enlarged display screen in the PF mode in FIG. 8B, as described in FIG. 5, the right key (R) or the left key (L) shown in FIG. 4 is pressed with a finger. The focus lens 12 may be driven in the closest or infinite direction, and the finger may be released from the right key (R) or the left key (L) at the point of focus. Thereafter, when the shutter release button is pressed, the electronic shutter is activated, and the image captured through the image capturing unit 30 is output to the recording unit 40 and is recorded in the memory card 42 via the card access unit 41, thereby completing the image capturing. . Further, when confirming the captured screen, the image signal recorded on the memory card 42 is read out to the reproducing unit 50 via the card access unit 41 by operating the reproduction button (PLAY), and at this time, the second input is performed. The image is output to the liquid crystal monitor 63 through the switch circuit 60 switched to the end b.
[0049]
In FIG. 8B, in addition to the display of the enlarged moving image, the contrast obtained by the hill-climbing calculation (integration of the high frequency component of the image signal) by the AF data from the AE / AF data creation circuit 34 is shown. The value is displayed as an evaluation value on the graph display unit 210 as an index 211. The graph display unit 210 constitutes a focus state display means for displaying the focus state by the index 210. The graph display unit 210 is vertically displayed in a bar shape or a band shape, and the index 211 moves up and down in accordance with the focus state. The boundary (maximum value) at which the index 211 moves to the upper position and moves again to the lower position is an evaluation value corresponding to the in-focus state (in-focus state). The AF evaluation value will be described with reference to FIG.
[0050]
In this way, the position to be focused and the display magnification of the image displayed on the liquid crystal monitor 63 as the display unit in the PF mode can be set to the setting screen by pressing the menu button (MENU) in advance. After that, the PF mode is set by pressing the PF button 94, and a predetermined position of the image is enlarged at a predetermined display magnification to display a moving image on the liquid crystal monitor 63, and the right and left keys of the cross key 96 are used. The enlarged image can be focused and the subject image can be recorded on the memory card 42 by operating the shutter release button 95.
[0051]
In FIGS. 6B and 8B, since the focus adjustment area of the photographed image is enlarged and displayed in the PF mode, the PF mode is changed to the PF mode by operating the PF button. In the LCD monitor 63, only the enlarged focus image is displayed, and the entire image to be photographed is not displayed.
[0052]
Therefore, in the embodiment shown in FIG. 9, when the PF mode is set by operating the PF button 94 from the state before the PF mode shown in FIG. 9A, the system control unit 80, as shown in FIG. The enlarged display for focusing is displayed on the entire screen on the liquid crystal monitor 63, and the entire captured image for adjusting the angle of view is reduced on the enlarged display screen so as to be combined and displayed as a sub-screen. The unit 50 and the switch circuit 60 are controlled.
[0053]
That is, in the PF mode, a captured image is supplied from the imaging unit 30 to the electronic zoom circuit 61 through the first input terminal a of the switch circuit 60, and an image portion at a predetermined position is controlled by the electronic zoom circuit 61 under the control of the system control unit 80. Is enlarged and read at a predetermined display magnification and supplied to the liquid crystal monitor 63, and the entire image to be photographed is supplied to the reproducing unit 50 through the imaging unit 30, the recording unit 40, and the card access unit 41, and system control is performed. Under the control of the unit 80, the buffer circuit in the reproduction unit 50 reads out the reduced image in the horizontal and vertical directions, and the reduced image is controlled by the system control unit 80 only during the synthesis period (child screen period). Is output through the second input terminal b, and is synthesized and displayed on the screen of the liquid crystal monitor 63 so as to be superimposed on the enlarged image for focusing.
[0054]
Therefore, in the embodiment of FIG. 9, after setting the PF display magnification and the PF image position by the menu display shown in FIG. 7, the display state of FIG. Transition to the two-screen display state of (b). In the case of FIG. 9B as well, as in the case of FIG. 8B, the contrast value is displayed as an evaluation value on the graph display unit 210 as an evaluation value, and is used as a reference for determining the in-focus state. . The graph display unit 210 constitutes a focus state display means for displaying the quality of the focus state based on the index 211.
[0055]
In the case of manual focus, when the enlarged image for focusing that is the first image and the small image for adjusting the angle of view that is the second image are simultaneously displayed on the screen of the liquid crystal monitor 63 that is the display unit. The system control unit 80 controls to display a moving image for at least the first image of the first and second images, and controls the reproducing unit 50 to display a moving image for the second image. Alternatively, the playback unit 50 may be controlled to display a still image.
[0056]
FIG. 10 is a diagram for explaining AF evaluation values by the hill-climbing method. FIG. 10A shows the luminance signal when the intensity (level) of the luminance signal component extracted from the image signal is taken on the vertical axis, the frequency (f) is taken on the horizontal axis, and the focus lens 12 is moved for focus adjustment. It shows the frequency distribution of the components. Frequency distribution lines A, B, C, and D are frequency distributions when A is in focus, and indicate a state in which higher frequency components are output. D is a frequency distribution at the time of defocusing. In this case, there is almost no output of high frequency components. B and C show a frequency distribution intermediate between A and D. Therefore, the luminance signal component extracted from the image signal is supplied to the AF data creation means composed of a high-pass filter and an integrator, and only the high-frequency component is extracted using the high-pass filter, and the high-frequency component is further integrated into the integrator. Is used to obtain AF data as an AF evaluation value. As the focus lens 12 moves, the AF evaluation value is centered on the just focus position (maximum) as shown in FIG. The value changes as you climb up or down the mountain. Therefore, during focus adjustment, if the index 211 as the AF evaluation value is displayed so as to move up and down on the graph display unit 210 as shown in FIGS. 8B and 9B, the focus state is displayed and the focus state is displayed. You can check the quality.
[0057]
In the embodiment described above, an electronic camera having a power focus function which is an electric manual focus function has been described. However, the present invention is not limited to a manual manual focus mechanism that uses an electric mechanism such as a step motor. Of course, this can also be applied. In the embodiment described above, the electronic camera having the electronic finder has been described. However, the present invention can also be applied to an electronic camera having the optical finder.
[0058]
【The invention's effect】
  As described above, according to the first invention, during manual focus, By combining and displaying an image obtained by reducing the entire image for angle-of-view adjustment before enlargement and an image for focusing that is a part of the entire image enlarged to the entire screen The angle of view of the entire captured image can be confirmed at the same time.
[0063]
  First2According to the invention, at the time of manual focus, when the enlarged image for focusing is displayed on the display unit (monitor), the focus state is displayed based on the image signal of the enlarged and displayed area. Focusing can be performed more reliably.
[Brief description of the drawings]
FIG. 1 is a block diagram showing an electronic imaging apparatus according to an embodiment of the present invention.
2 is a perspective view showing an external appearance (back side) of an electronic camera used as the electronic imaging apparatus of FIG. 1; FIG.
FIG. 3 is a flowchart for explaining a PF switching process in FIG. 1;
4 is a diagram showing an example of a switch arrangement in FIG. 1. FIG.
FIG. 5 is a flowchart for explaining a PF process in FIG. 1;
FIG. 6 is a diagram for explaining a first embodiment of enlarged display in a PF mode.
FIG. 7 is a diagram showing a menu screen for setting a display magnification and an image position for performing enlarged display in the PF mode.
FIG. 8 is a diagram illustrating a second embodiment of enlarged display in a PF mode.
FIG. 9 is a diagram for explaining a third embodiment of enlarged display in a PF mode.
FIG. 10 is a diagram for explaining an AF evaluation value.
[Explanation of symbols]
63 ... LCD monitor (display unit)
80 ... System control unit (control means)
201, 210 ... graph display unit (focus state display means)
202, 211… Indicator

Claims (2)

An electronic imaging device capable of manual focus and capable of enlarging and displaying an image of a photographic subject on a display unit at a predetermined magnification,
A display in which a first image obtained by enlarging a predetermined part of the captured image to the entire screen and a second image obtained by reducing the entire captured image to a part of the screen are simultaneously displayed on the same screen. And
At the time of manual focus, at least the first image of the first and second images is a control means for displaying a moving image;
Electronic imaging apparatus characterized by comprising a. 2. The electronic imaging apparatus according to claim 1, further comprising a focus state display means for displaying a focus state based on an image signal of the enlarged display area during manual focus .

Images