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CA998865A - Photographic control system for flash and ambient light modes - Google Patents

Photographic control system for flash and ambient light modes

Info

Publication number
CA998865A
CA998865A CA169,112A CA169112A CA998865A CA 998865 A CA998865 A CA 998865A CA 169112 A CA169112 A CA 169112A CA 998865 A CA998865 A CA 998865A
Authority
CA
Canada
Prior art keywords
flash
control system
ambient light
light modes
photographic control
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
CA169,112A
Other versions
CA169112S (en
Inventor
John P. Burgarella
Peter P. Carcia
Richard C. Kee
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.)
Polaroid Corp
Original Assignee
Polaroid Corp
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
Priority claimed from US00333331A external-priority patent/US3820128A/en
Application filed by Polaroid Corp filed Critical Polaroid Corp
Priority to CA223,863A priority Critical patent/CA999176A/en
Application granted granted Critical
Publication of CA998865A publication Critical patent/CA998865A/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
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor
    • G03B15/02—Illuminating scene
    • G03B15/03—Combinations of cameras with lighting apparatus; Flash units
    • G03B15/04—Combinations of cameras with non-electronic flash apparatus; Non-electronic flash units
    • G03B15/0452—Electrical ignition means connected to the shutter
    • 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
    • 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
    • G03B9/00—Exposure-making shutters; Diaphragms
    • G03B9/58—Means for varying duration of "open" period of shutter

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure Control For Cameras (AREA)
  • Stroboscope Apparatuses (AREA)
CA169,112A 1972-04-24 1973-04-19 Photographic control system for flash and ambient light modes Expired CA998865A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA223,863A CA999176A (en) 1972-04-24 1975-04-04 Photographic flash and ambient exposure control system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US24698172A 1972-04-24 1972-04-24
US00333331A US3820128A (en) 1972-04-24 1973-02-16 Flash photographic control system

Publications (1)

Publication Number Publication Date
CA998865A true CA998865A (en) 1976-10-26

Family

ID=26938373

Family Applications (1)

Application Number Title Priority Date Filing Date
CA169,112A Expired CA998865A (en) 1972-04-24 1973-04-19 Photographic control system for flash and ambient light modes

Country Status (3)

Country Link
JP (1) JPS5716336B2 (en)
CA (1) CA998865A (en)
DE (1) DE2320676C2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5198018A (en) * 1975-02-25 1976-08-28 Satsueisocho senkoroshutsushisutemu

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3667357A (en) * 1968-12-24 1972-06-06 Minolta Camera Kk Automatic control devices for a camera
US3651745A (en) * 1969-04-28 1972-03-28 Eastman Kodak Co Flash device for cinematographic camera
US3641891A (en) * 1969-06-30 1972-02-15 Polaroid Corp Exposure control system
US3595152A (en) * 1969-06-30 1971-07-27 Polaroid Corp Exposure control system incorporating a master actuator
US3699861A (en) * 1969-07-24 1972-10-24 Polaroid Corp Flash synchronization circuit for sequential firing of an array of flashbulbs
DE1956756C3 (en) * 1969-11-12 1978-08-10 Canon K.K., Tokio Exposure control circuit for a photographic camera

Also Published As

Publication number Publication date
JPS5716336B2 (en) 1982-04-05
DE2320676A1 (en) 1973-11-15
JPS4948323A (en) 1974-05-10
DE2320676C2 (en) 1986-12-11

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