FR2447047A1 - Circuit de commande du temps d'exposition pour un appareil photographique muni d'une lampe-eclair - Google Patents

Circuit de commande du temps d'exposition pour un appareil photographique muni d'une lampe-eclair

Info

Publication number
FR2447047A1
FR2447047A1 FR7900978A FR7900978A FR2447047A1 FR 2447047 A1 FR2447047 A1 FR 2447047A1 FR 7900978 A FR7900978 A FR 7900978A FR 7900978 A FR7900978 A FR 7900978A FR 2447047 A1 FR2447047 A1 FR 2447047A1
Authority
FR
France
Prior art keywords
exposure
manual override
signal
speed
timing circuit
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.)
Granted
Application number
FR7900978A
Other languages
English (en)
French (fr)
Other versions
FR2447047B1 (fi
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.)
Fujinon Corp
Original Assignee
Fuji Photo Optical Co Ltd
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 Fuji Photo Optical Co Ltd filed Critical Fuji Photo Optical Co Ltd
Priority to FR7900978A priority Critical patent/FR2447047A1/fr
Publication of FR2447047A1 publication Critical patent/FR2447047A1/fr
Application granted granted Critical
Publication of FR2447047B1 publication Critical patent/FR2447047B1/fr
Granted 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
    • G03B7/091—Digital circuits
    • G03B7/093—Digital circuits for control of exposure time
    • 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
    • G03B7/16—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly in accordance with both the intensity of the flash source and the distance of the flash source from the object, e.g. in accordance with the "guide number" of the flash bulb and the focusing of the camera

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure Control For Cameras (AREA)
  • Stroboscope Apparatuses (AREA)
FR7900978A 1979-01-16 1979-01-16 Circuit de commande du temps d'exposition pour un appareil photographique muni d'une lampe-eclair Granted FR2447047A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7900978A FR2447047A1 (fr) 1979-01-16 1979-01-16 Circuit de commande du temps d'exposition pour un appareil photographique muni d'une lampe-eclair

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7900978A FR2447047A1 (fr) 1979-01-16 1979-01-16 Circuit de commande du temps d'exposition pour un appareil photographique muni d'une lampe-eclair

Publications (2)

Publication Number Publication Date
FR2447047A1 true FR2447047A1 (fr) 1980-08-14
FR2447047B1 FR2447047B1 (fi) 1982-05-14

Family

ID=9220799

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7900978A Granted FR2447047A1 (fr) 1979-01-16 1979-01-16 Circuit de commande du temps d'exposition pour un appareil photographique muni d'une lampe-eclair

Country Status (1)

Country Link
FR (1) FR2447047A1 (fi)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2520449A1 (de) * 1974-05-08 1975-11-13 Canon Kk Kamerasystem fuer blitzlichtphotographie
DE2541958A1 (de) * 1974-09-20 1976-04-29 Canon Kk Kamerasystem
DE2808642A1 (de) * 1977-02-28 1978-08-31 Asahi Optical Co Ltd Schaltungsanordnung zur steuerung eines elektronenblitzgeraets

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2520449A1 (de) * 1974-05-08 1975-11-13 Canon Kk Kamerasystem fuer blitzlichtphotographie
DE2541958A1 (de) * 1974-09-20 1976-04-29 Canon Kk Kamerasystem
DE2808642A1 (de) * 1977-02-28 1978-08-31 Asahi Optical Co Ltd Schaltungsanordnung zur steuerung eines elektronenblitzgeraets

Also Published As

Publication number Publication date
FR2447047B1 (fi) 1982-05-14

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Legal Events

Date Code Title Description
ST Notification of lapse