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DE829228C - Light curve exposure meter to determine the exposure time for cameras - Google Patents

Light curve exposure meter to determine the exposure time for cameras

Info

Publication number
DE829228C
DE829228C DEST975A DEST000975A DE829228C DE 829228 C DE829228 C DE 829228C DE ST975 A DEST975 A DE ST975A DE ST000975 A DEST000975 A DE ST000975A DE 829228 C DE829228 C DE 829228C
Authority
DE
Germany
Prior art keywords
light curve
curve
light
cameras
values
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DEST975A
Other languages
German (de)
Inventor
Julius Stille
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JULIUS STILLE
Original Assignee
JULIUS STILLE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by JULIUS STILLE filed Critical JULIUS STILLE
Priority to DEST975A priority Critical patent/DE829228C/en
Application granted granted Critical
Publication of DE829228C publication Critical patent/DE829228C/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Exposure Control For Cameras (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)

Description

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

2857 1.522857 1.52

Claims (2)

Patentansprüche:Patent claims: 1. Lichtkurven-Belichtungsmesser mit einem mechanisch oder handbewegten auswechselbaren Uhrzifferlichtkurvenblatt nach Patent 824 560, dadurch gekennzeichnet, daß eine für alle Breitengradlichtverhältnisse berechnete, nicht auswechselbare Lichtkurve (b, e) gegenüber dem Uhrzifferblatt (α) verstellbar ist und die Kurvenwerte (c) sich durch Einstellung der Kurvenmitte (g) auf die Einstellmarken (It) zwangsläufig den westlich und östlich vom Zeitmeridian veränderten Ortszeiten anpassen.1. Light curve exposure meter with a mechanically or manually moved exchangeable clock dial light curve sheet according to patent 824 560, characterized in that a non-exchangeable light curve (b, e) calculated for all latitude lighting conditions is adjustable relative to the clock face (α) and the curve values (c) are adjustable by setting the center of the curve (g) to the setting marks (It), inevitably adapt to the local times that have been changed to the west and east of the time meridian. 2. Lichtkurven-Belichtuiigsmesser nach Anspruch i, dadurch gekennzeichnet, daß die Lichtkurvenwerte (c) sich auf die bei Boxkameras üblichen Blendenöffnungen (/) und Objektivverschlußzeiten (in) beschränken und diese (I, m) in Abhängigkeit von den zusammengefaßten Werten der Lichtkurve, Filmempfindlichkeit und Wetterlage (i, j) direkt ablesbar in Symbolen oder Zahlen (I, m) den Objektgruppenfeldern (k) gegenüberstehen.2. Light curve exposure meter according to claim i, characterized in that the light curve values (c) are limited to the aperture openings (/) and lens shutter times (in) customary in box cameras and these (I, m) depending on the combined values of the light curve, Film speed and weather conditions (i, j) can be read directly in symbols or numbers (I, m ) opposite the object group fields (k).
DEST975A 1950-04-25 1950-04-25 Light curve exposure meter to determine the exposure time for cameras Expired DE829228C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEST975A DE829228C (en) 1950-04-25 1950-04-25 Light curve exposure meter to determine the exposure time for cameras

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEST975A DE829228C (en) 1950-04-25 1950-04-25 Light curve exposure meter to determine the exposure time for cameras

Publications (1)

Publication Number Publication Date
DE829228C true DE829228C (en) 1952-01-24

Family

ID=7452305

Family Applications (1)

Application Number Title Priority Date Filing Date
DEST975A Expired DE829228C (en) 1950-04-25 1950-04-25 Light curve exposure meter to determine the exposure time for cameras

Country Status (1)

Country Link
DE (1) DE829228C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1006177B (en) * 1954-01-14 1957-04-11 Rollei Werke Franke Heidecke Arrangement for determining the exposure time

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1006177B (en) * 1954-01-14 1957-04-11 Rollei Werke Franke Heidecke Arrangement for determining the exposure time

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