GB2295238A8 - Exposure control apparatus of a camera - Google Patents

Exposure control apparatus of a camera

Info

Publication number
GB2295238A8
GB2295238A8 GB9600905A GB9600905A GB2295238A8 GB 2295238 A8 GB2295238 A8 GB 2295238A8 GB 9600905 A GB9600905 A GB 9600905A GB 9600905 A GB9600905 A GB 9600905A GB 2295238 A8 GB2295238 A8 GB 2295238A8
Authority
GB
United Kingdom
Prior art keywords
camera
control apparatus
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
GB9600905A
Other versions
GB9600905D0 (en
GB2295238A (en
GB2295238B (en
Inventor
Tadayuki Kirigaya
Isamu Hirai
Hideaki Tsuji
Nobuhiko Matsudo
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 JP28278092A external-priority patent/JP3260173B2/en
Priority claimed from JP28278292A external-priority patent/JP3406620B2/en
Priority claimed from JP04282781A external-priority patent/JP3124126B2/en
Application filed by Asahi Kogaku Kogyo Co Ltd filed Critical Asahi Kogaku Kogyo Co Ltd
Priority claimed from GB9314705A external-priority patent/GB2272304B/en
Publication of GB9600905D0 publication Critical patent/GB9600905D0/en
Publication of GB2295238A publication Critical patent/GB2295238A/en
Application granted granted Critical
Publication of GB2295238B publication Critical patent/GB2295238B/en
Publication of GB2295238A8 publication Critical patent/GB2295238A8/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
    • G03B7/16—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
    • G03B7/08—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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure Control For Cameras (AREA)
  • Stroboscope Apparatuses (AREA)
GB9600905A 1992-10-21 1993-07-15 Exposure control apparatus for a camera Expired - Fee Related GB2295238B (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP28278092A JP3260173B2 (en) 1992-10-21 1992-10-21 Exposure control device
JP28278292A JP3406620B2 (en) 1992-10-21 1992-10-21 Strobe program shift exposure control device
JP04282781A JP3124126B2 (en) 1992-10-21 1992-10-21 Strobe program shift exposure control device
GB9314705A GB2272304B (en) 1992-10-21 1993-07-15 Exposure control apparatus for a camera

Publications (4)

Publication Number Publication Date
GB9600905D0 GB9600905D0 (en) 1996-03-20
GB2295238A GB2295238A (en) 1996-05-22
GB2295238B GB2295238B (en) 1996-09-25
GB2295238A8 true GB2295238A8 (en) 1996-11-18

Family

ID=27451047

Family Applications (2)

Application Number Title Priority Date Filing Date
GB9600905A Expired - Fee Related GB2295238B (en) 1992-10-21 1993-07-15 Exposure control apparatus for a camera
GB9600906A Expired - Fee Related GB2295239B8 (en) 1992-10-21 1993-07-15 Exposure control apparatus for a camera

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB9600906A Expired - Fee Related GB2295239B8 (en) 1992-10-21 1993-07-15 Exposure control apparatus for a camera

Country Status (1)

Country Link
GB (2) GB2295238B (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3175205D1 (en) * 1981-05-26 1986-10-02 Polaroid Corp Photographic camera

Also Published As

Publication number Publication date
GB2295239A8 (en) 1997-08-22
GB2295239A (en) 1996-05-22
GB2295239B8 (en) 1997-08-22
GB2295239B (en) 1996-09-25
GB9600905D0 (en) 1996-03-20
GB2295238A (en) 1996-05-22
GB2295238B (en) 1996-09-25
GB9600906D0 (en) 1996-03-20

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Legal Events

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

Effective date: 20070715