FR1132293A - Improvements to cameras - Google Patents

Improvements to cameras

Info

Publication number
FR1132293A
FR1132293A FR1132293DA FR1132293A FR 1132293 A FR1132293 A FR 1132293A FR 1132293D A FR1132293D A FR 1132293DA FR 1132293 A FR1132293 A FR 1132293A
Authority
FR
France
Prior art keywords
cameras
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
Other languages
French (fr)
Inventor
Valentin Yarmonkine
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 filed Critical
Application granted granted Critical
Publication of FR1132293A publication Critical patent/FR1132293A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
    • G03B7/08—Control effected solely on the basis of the response, to the intensity of the light received by the camera, of a built-in light-sensitive device
    • G03B7/099—Arrangement of photoelectric elements in or on the camera
    • G03B7/0993—Arrangement of photoelectric elements in or on the camera in the camera
    • G03B7/0997—Through the lens [TTL] measuring
    • G03B7/09971—Through the lens [TTL] measuring in mirror-reflex cameras
    • G03B7/09972—Through the lens [TTL] measuring in mirror-reflex cameras using the mirror as sensor light reflecting or transmitting member

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR1132293D 1955-09-27 1955-09-27 Improvements to cameras Expired FR1132293A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1132293T 1955-09-27

Publications (1)

Publication Number Publication Date
FR1132293A true FR1132293A (en) 1957-03-07

Family

ID=9638282

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1132293D Expired FR1132293A (en) 1955-09-27 1955-09-27 Improvements to cameras

Country Status (1)

Country Link
FR (1) FR1132293A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986004427A1 (en) * 1985-01-21 1986-07-31 Philippe Vogt Exposure metre element and device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986004427A1 (en) * 1985-01-21 1986-07-31 Philippe Vogt Exposure metre element and device
US4779116A (en) * 1985-01-21 1988-10-18 Philippe Vogt Exposure-measuring element and device

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