GB2090424B - Fill-in flash - Google Patents

Fill-in flash

Info

Publication number
GB2090424B
GB2090424B GB8138428A GB8138428A GB2090424B GB 2090424 B GB2090424 B GB 2090424B GB 8138428 A GB8138428 A GB 8138428A GB 8138428 A GB8138428 A GB 8138428A GB 2090424 B GB2090424 B GB 2090424B
Authority
GB
United Kingdom
Prior art keywords
fill
flash
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
GB8138428A
Other languages
English (en)
Other versions
GB2090424A (en
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
Application filed by Polaroid Corp filed Critical Polaroid Corp
Publication of GB2090424A publication Critical patent/GB2090424A/en
Application granted granted Critical
Publication of GB2090424B publication Critical patent/GB2090424B/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
    • 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)
  • Shutters For Cameras (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
GB8138428A 1980-12-24 1981-12-21 Fill-in flash Expired GB2090424B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/219,930 US4345828A (en) 1980-12-24 1980-12-24 Light detecting apparatus for photographic camera

Publications (2)

Publication Number Publication Date
GB2090424A GB2090424A (en) 1982-07-07
GB2090424B true GB2090424B (en) 1984-10-24

Family

ID=22821311

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8138428A Expired GB2090424B (en) 1980-12-24 1981-12-21 Fill-in flash

Country Status (6)

Country Link
US (1) US4345828A (https=)
JP (1) JPS57164720A (https=)
CA (1) CA1161683A (https=)
DE (1) DE3151129C2 (https=)
FR (1) FR2496910B1 (https=)
GB (1) GB2090424B (https=)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4484808A (en) * 1982-11-01 1984-11-27 Polaroid Corporation Method of and apparatus for controlling scene radiation
US4445762A (en) * 1982-12-28 1984-05-01 Polaroid Corporation Encoded shutter blade apparatus
US4719487A (en) * 1986-10-20 1988-01-12 Polaroid Corporation Camera having tiltable photocell lens assembly
JP2515036Y2 (ja) * 1990-01-19 1996-10-23 旭光学工業株式会社 カメラの測光装置
JP2673146B2 (ja) * 1992-08-04 1997-11-05 インターナショナル・ビジネス・マシーンズ・コーポレイション 電子フラッシュの発光タイミングを決定する方法及びカメラシステム
US7978260B2 (en) * 2003-09-15 2011-07-12 Senshin Capital, Llc Electronic camera and method with fill flash function

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3270638A (en) * 1963-07-22 1966-09-06 Eastman Kodak Co Photometric system
US4147418A (en) * 1977-10-11 1979-04-03 Polaroid Corporation Photographic exposure control system with independent ambient and artificial illumination control modes
US4173400A (en) * 1978-02-02 1979-11-06 Polaroid Corporation Photographic camera apparatus
US4255031A (en) * 1979-01-02 1981-03-10 Polaroid Corporation Photographic camera with dual purpose light indicator
DE3049435A1 (de) * 1979-12-31 1981-10-15 Polaroid Corp., 02139 Cambridge, Mass. Fotografischer apparat
US4315677A (en) * 1980-07-03 1982-02-16 Polaroid Corporation Calibration arrangement for exposure control system
US4297016A (en) * 1980-07-07 1981-10-27 Polaroid Corporation Scanning shutter blade arrangement with dynamic apertures for ambient and flash exposures
CA1170884A (en) * 1980-10-06 1984-07-17 Bruce K. Johnson Photographic camera

Also Published As

Publication number Publication date
US4345828A (en) 1982-08-24
GB2090424A (en) 1982-07-07
FR2496910A1 (fr) 1982-06-25
CA1161683A (en) 1984-02-07
JPS57164720A (en) 1982-10-09
JPH0140968B2 (https=) 1989-09-01
DE3151129A1 (de) 1982-07-29
FR2496910B1 (fr) 1986-03-28
DE3151129C2 (de) 1994-05-19

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19971221