GB2069158B - Exposure control using fill-in flash - Google Patents

Exposure control using fill-in flash

Info

Publication number
GB2069158B
GB2069158B GB8041513A GB8041513A GB2069158B GB 2069158 B GB2069158 B GB 2069158B GB 8041513 A GB8041513 A GB 8041513A GB 8041513 A GB8041513 A GB 8041513A GB 2069158 B GB2069158 B GB 2069158B
Authority
GB
United Kingdom
Prior art keywords
fill
flash
exposure control
exposure
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
GB8041513A
Other versions
GB2069158A (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
Priority claimed from US06/108,381 external-priority patent/US4491406A/en
Priority claimed from US06/108,547 external-priority patent/US4358186A/en
Priority claimed from US06/108,219 external-priority patent/US4351593A/en
Application filed by Polaroid Corp filed Critical Polaroid Corp
Publication of GB2069158A publication Critical patent/GB2069158A/en
Application granted granted Critical
Publication of GB2069158B publication Critical patent/GB2069158B/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
    • 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)
  • Studio Devices (AREA)
GB8041513A 1979-12-31 1980-12-30 Exposure control using fill-in flash Expired GB2069158B (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US10854679A 1979-12-31 1979-12-31
US06/108,381 US4491406A (en) 1979-12-31 1979-12-31 Method and apparatus employing dual photocells for removing spectral filter during strobe pulse
US06/108,547 US4358186A (en) 1979-12-31 1979-12-31 Method and apparatus for controlling exposure by selective use of blocking visible filter
US06/108,219 US4351593A (en) 1979-12-31 1979-12-31 Method and apparatus for selective positioning of spectral filter during exposure control

Publications (2)

Publication Number Publication Date
GB2069158A GB2069158A (en) 1981-08-19
GB2069158B true GB2069158B (en) 1984-05-31

Family

ID=27493629

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8041513A Expired GB2069158B (en) 1979-12-31 1980-12-30 Exposure control using fill-in flash

Country Status (3)

Country Link
DE (1) DE3049435A1 (en)
FR (1) FR2478330A1 (en)
GB (1) GB2069158B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1170884A (en) * 1980-10-06 1984-07-17 Bruce K. Johnson Photographic camera
US4345828A (en) * 1980-12-24 1982-08-24 Polaroid Corporation Light detecting apparatus for photographic camera
US4444478A (en) * 1982-11-16 1984-04-24 Polaroid Corporation Hybrid camera arrangement
US4445763A (en) * 1982-12-28 1984-05-01 Polaroid Corporation Hybrid camera arrangement
KR100573697B1 (en) * 2003-12-29 2006-04-26 삼성전자주식회사 apparatus for switching optical low pass filter for use in optical instrument

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3468228A (en) * 1966-09-02 1969-09-23 Polaroid Corp Color compensated shutter
US3903413A (en) * 1973-12-06 1975-09-02 Polaroid Corp Glass-filled polymeric filter element
US3942183A (en) * 1974-07-02 1976-03-02 Polaroid Corporation Camera with pivoting blades
US3906516A (en) * 1974-11-25 1975-09-16 Eastman Kodak Co Method and apparatus for controlling exposure in artificial illumination
US4040072A (en) * 1976-01-13 1977-08-02 Polaroid Corporation Shutter latch arrangement releasable through shutter blade actuation and resettable through film advancement
US4040070A (en) * 1976-04-05 1977-08-02 Eastman Kodak Company Optimized flash exposure
DE3036514C2 (en) * 1979-10-01 1985-07-04 Eastman Kodak Co., Rochester, N.Y. Photographic camera
DE3036522A1 (en) * 1979-10-01 1981-04-16 Eastman Kodak Co., Rochester, N.Y. Automatic flash exposure camera - has filters for blocking selective amounts of IR depending upon reflection of IR from grass and leaves

Also Published As

Publication number Publication date
FR2478330B1 (en) 1985-05-24
GB2069158A (en) 1981-08-19
FR2478330A1 (en) 1981-09-18
DE3049435A1 (en) 1981-10-15
DE3049435C2 (en) 1992-10-22

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Legal Events

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

Effective date: 19971230