GB9402974D0 - Exposure control device for camera - Google Patents

Exposure control device for camera

Info

Publication number
GB9402974D0
GB9402974D0 GB9402974A GB9402974A GB9402974D0 GB 9402974 D0 GB9402974 D0 GB 9402974D0 GB 9402974 A GB9402974 A GB 9402974A GB 9402974 A GB9402974 A GB 9402974A GB 9402974 D0 GB9402974 D0 GB 9402974D0
Authority
GB
United Kingdom
Prior art keywords
camera
control device
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.)
Granted
Application number
GB9402974A
Other versions
GB2274173A (en
GB2274173B (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.)
Pentax Corp
Original Assignee
Asahi Kogaku Kogyo 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
Priority claimed from JP2032984A external-priority patent/JP2868270B2/en
Application filed by Asahi Kogaku Kogyo Co Ltd filed Critical Asahi Kogaku Kogyo Co Ltd
Publication of GB9402974D0 publication Critical patent/GB9402974D0/en
Publication of GB2274173A publication Critical patent/GB2274173A/en
Application granted granted Critical
Publication of GB2274173B publication Critical patent/GB2274173B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G03B7/097—Digital circuits for control of both exposure time and aperture
    • 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
    • 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
    • G03B7/20—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly in accordance with change of lens

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure Control For Cameras (AREA)
GB9402974A 1990-02-14 1994-02-15 Exposure control device for camera Expired - Fee Related GB2274173B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2032984A JP2868270B2 (en) 1990-02-14 1990-02-14 Camera exposure control device
GB9103174A GB2241588B (en) 1990-02-14 1991-02-14 Exposure control device for camera

Publications (3)

Publication Number Publication Date
GB9402974D0 true GB9402974D0 (en) 1994-04-13
GB2274173A GB2274173A (en) 1994-07-13
GB2274173B GB2274173B (en) 1994-09-28

Family

ID=26298444

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9402974A Expired - Fee Related GB2274173B (en) 1990-02-14 1994-02-15 Exposure control device for camera

Country Status (1)

Country Link
GB (1) GB2274173B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4861234B2 (en) 2007-04-13 2012-01-25 株式会社エルモ社 Exposure control method and imaging apparatus

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5865423A (en) * 1981-10-15 1983-04-19 Minolta Camera Co Ltd Automatic selector for photographing mode of camera

Also Published As

Publication number Publication date
GB2274173A (en) 1994-07-13
GB2274173B (en) 1994-09-28

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Legal Events

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

Effective date: 20060214