JPS57139725A - Shutter controlling circuit incorporating dimming signal circuit of flash - Google Patents

Shutter controlling circuit incorporating dimming signal circuit of flash

Info

Publication number
JPS57139725A
JPS57139725A JP56025114A JP2511481A JPS57139725A JP S57139725 A JPS57139725 A JP S57139725A JP 56025114 A JP56025114 A JP 56025114A JP 2511481 A JP2511481 A JP 2511481A JP S57139725 A JPS57139725 A JP S57139725A
Authority
JP
Japan
Prior art keywords
turned
shutter
circuit
flash
comparator
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.)
Pending
Application number
JP56025114A
Other languages
English (en)
Inventor
Shinji Nagaoka
Koji Sato
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.)
Seiko Koki KK
Original Assignee
Seiko Koki KK
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 Seiko Koki KK filed Critical Seiko Koki KK
Priority to JP56025114A priority Critical patent/JPS57139725A/ja
Priority to US06/343,197 priority patent/US4466727A/en
Priority to GB8202548A priority patent/GB2093601B/en
Priority to DE19823206191 priority patent/DE3206191A1/de
Publication of JPS57139725A publication Critical patent/JPS57139725A/ja
Pending 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
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor
    • G03B15/02—Illuminating scene
    • G03B15/03—Combinations of cameras with lighting apparatus; Flash units
    • G03B15/05—Combinations of cameras with electronic flash apparatus; Electronic flash units
    • 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)
JP56025114A 1981-02-23 1981-02-23 Shutter controlling circuit incorporating dimming signal circuit of flash Pending JPS57139725A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP56025114A JPS57139725A (en) 1981-02-23 1981-02-23 Shutter controlling circuit incorporating dimming signal circuit of flash
US06/343,197 US4466727A (en) 1981-02-23 1982-01-27 Shutter control circuit equipped with a flash light control signal circuit
GB8202548A GB2093601B (en) 1981-02-23 1982-01-29 Shutter control circuit for daylight flash
DE19823206191 DE3206191A1 (de) 1981-02-23 1982-02-20 Belichtungssteuerschaltung fuer einen kameraverschluss

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56025114A JPS57139725A (en) 1981-02-23 1981-02-23 Shutter controlling circuit incorporating dimming signal circuit of flash

Publications (1)

Publication Number Publication Date
JPS57139725A true JPS57139725A (en) 1982-08-28

Family

ID=12156895

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56025114A Pending JPS57139725A (en) 1981-02-23 1981-02-23 Shutter controlling circuit incorporating dimming signal circuit of flash

Country Status (4)

Country Link
US (1) US4466727A (ja)
JP (1) JPS57139725A (ja)
DE (1) DE3206191A1 (ja)
GB (1) GB2093601B (ja)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4444478A (en) * 1982-11-16 1984-04-24 Polaroid Corporation Hybrid camera arrangement
JPS6051824A (ja) * 1983-08-31 1985-03-23 Seiko Koki Kk カメラのフラツシユマチツク装置
US8157396B2 (en) * 2008-12-15 2012-04-17 Smith Jr Wilbert Leon Inhibiting unwanted photography and video recording

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4990527A (ja) * 1972-12-27 1974-08-29
JPS5383739A (en) * 1976-12-29 1978-07-24 Olympus Optical Co Ltd Strobo flash control system for focal plane shutter camera of electric type
JPS5574522A (en) * 1978-11-29 1980-06-05 Morris Shashin Kogyo Kk Synchronous light emission system of strobe flash device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4268138A (en) * 1979-05-29 1981-05-19 Polaroid Corporation Follow focus flash arrangement
US4255030A (en) * 1979-09-13 1981-03-10 Polaroid Corporation Camera with proportional fill flash quench strobe

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4990527A (ja) * 1972-12-27 1974-08-29
JPS5383739A (en) * 1976-12-29 1978-07-24 Olympus Optical Co Ltd Strobo flash control system for focal plane shutter camera of electric type
JPS5574522A (en) * 1978-11-29 1980-06-05 Morris Shashin Kogyo Kk Synchronous light emission system of strobe flash device

Also Published As

Publication number Publication date
GB2093601B (en) 1984-07-18
US4466727A (en) 1984-08-21
GB2093601A (en) 1982-09-02
DE3206191A1 (de) 1982-09-09

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