FR1527417A - Improvements to light meters for mirror cameras - Google Patents

Improvements to light meters for mirror cameras

Info

Publication number
FR1527417A
FR1527417A FR110417A FR110417A FR1527417A FR 1527417 A FR1527417 A FR 1527417A FR 110417 A FR110417 A FR 110417A FR 110417 A FR110417 A FR 110417A FR 1527417 A FR1527417 A FR 1527417A
Authority
FR
France
Prior art keywords
light meters
mirror cameras
cameras
mirror
meters
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
FR110417A
Other languages
French (fr)
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.)
Ernst Leitz Wetzlar GmbH
Original Assignee
Ernst Leitz Wetzlar GmbH
Ernst Leitz GmbH
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 Ernst Leitz Wetzlar GmbH, Ernst Leitz GmbH filed Critical Ernst Leitz Wetzlar GmbH
Priority to FR110417A priority Critical patent/FR1527417A/en
Application granted granted Critical
Publication of FR1527417A publication Critical patent/FR1527417A/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)
FR110417A 1967-06-14 1967-06-14 Improvements to light meters for mirror cameras Expired FR1527417A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR110417A FR1527417A (en) 1967-06-14 1967-06-14 Improvements to light meters for mirror cameras

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR110417A FR1527417A (en) 1967-06-14 1967-06-14 Improvements to light meters for mirror cameras

Publications (1)

Publication Number Publication Date
FR1527417A true FR1527417A (en) 1968-05-31

Family

ID=8633049

Family Applications (1)

Application Number Title Priority Date Filing Date
FR110417A Expired FR1527417A (en) 1967-06-14 1967-06-14 Improvements to light meters for mirror cameras

Country Status (1)

Country Link
FR (1) FR1527417A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4005441A (en) * 1974-07-31 1977-01-25 Nippon Kogaku K.K. Photometric device of through the lens type exposure meter in a single-lens reflex camera

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4005441A (en) * 1974-07-31 1977-01-25 Nippon Kogaku K.K. Photometric device of through the lens type exposure meter in a single-lens reflex camera

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