FR1497863A - Device for measuring exposure time in mirror-reflective photographic cameras - Google Patents

Device for measuring exposure time in mirror-reflective photographic cameras

Info

Publication number
FR1497863A
FR1497863A FR81655A FR81655A FR1497863A FR 1497863 A FR1497863 A FR 1497863A FR 81655 A FR81655 A FR 81655A FR 81655 A FR81655 A FR 81655A FR 1497863 A FR1497863 A FR 1497863A
Authority
FR
France
Prior art keywords
mirror
exposure time
photographic cameras
measuring exposure
reflective photographic
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
FR81655A
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.)
Pentacon GmbH Foto und Feinwerktechnik
Original Assignee
Pentacon Dresden VEB
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 Pentacon Dresden VEB filed Critical Pentacon Dresden VEB
Priority to FR81655A priority Critical patent/FR1497863A/en
Application granted granted Critical
Publication of FR1497863A publication Critical patent/FR1497863A/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
    • G03B7/09976—Through the lens [TTL] measuring in mirror-reflex cameras the sensor being mounted in, before, or behind the porro-prism

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR81655A 1966-10-26 1966-10-26 Device for measuring exposure time in mirror-reflective photographic cameras Expired FR1497863A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR81655A FR1497863A (en) 1966-10-26 1966-10-26 Device for measuring exposure time in mirror-reflective photographic cameras

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR81655A FR1497863A (en) 1966-10-26 1966-10-26 Device for measuring exposure time in mirror-reflective photographic cameras

Publications (1)

Publication Number Publication Date
FR1497863A true FR1497863A (en) 1967-10-13

Family

ID=8619978

Family Applications (1)

Application Number Title Priority Date Filing Date
FR81655A Expired FR1497863A (en) 1966-10-26 1966-10-26 Device for measuring exposure time in mirror-reflective photographic cameras

Country Status (1)

Country Link
FR (1) FR1497863A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1797288B1 (en) * 1968-08-30 1971-01-14 Elbe Kamera Gmbh SLR camera with prism viewfinder and light meter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1797288B1 (en) * 1968-08-30 1971-01-14 Elbe Kamera Gmbh SLR camera with prism viewfinder and light meter

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