GB2010500A - Photographic Camera having an Exposure Indicator - Google Patents

Photographic Camera having an Exposure Indicator

Info

Publication number
GB2010500A
GB2010500A GB7849296A GB7849296A GB2010500A GB 2010500 A GB2010500 A GB 2010500A GB 7849296 A GB7849296 A GB 7849296A GB 7849296 A GB7849296 A GB 7849296A GB 2010500 A GB2010500 A GB 2010500A
Authority
GB
United Kingdom
Prior art keywords
exposure
film
indicator
photographic camera
determines
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
GB7849296A
Other versions
GB2010500B (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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
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 Eastman Kodak Co filed Critical Eastman Kodak Co
Publication of GB2010500A publication Critical patent/GB2010500A/en
Application granted granted Critical
Publication of GB2010500B publication Critical patent/GB2010500B/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
    • G03B7/24—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly automatically in accordance with markings or other means indicating film speed or kind of film on the magazine to be inserted 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
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/18—Signals indicating condition of a camera member or suitability of light
    • G03B17/20—Signals indicating condition of a camera member or suitability of light visible in viewfinder

Abstract

A photographic camera includes an exposure indicator 21 controlled by a computer which determines whether the camera is adjusted to provide an acceptably exposed photograph, this determination being made by taking into account the over- and under-exposure limits of the film being utilized. The computer determines a range of acceptable exposure values from inputs representing film speed, film exposure latitudes and light level. It also determines the exposure value actually set by the shutter and diaphragm controls 16, 17. These are compared in order to control the indicator 21. The film speed input may be provided by contacts (50, Fig. 2 not shown) on the film cartridge (34). <IMAGE>
GB7849296A 1977-12-20 1978-12-20 Photographic camera having an exposure indicator Expired GB2010500B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US86226377A 1977-12-20 1977-12-20

Publications (2)

Publication Number Publication Date
GB2010500A true GB2010500A (en) 1979-06-27
GB2010500B GB2010500B (en) 1982-03-31

Family

ID=25338074

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7849296A Expired GB2010500B (en) 1977-12-20 1978-12-20 Photographic camera having an exposure indicator

Country Status (2)

Country Link
GB (1) GB2010500B (en)
HK (1) HK42082A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2147712A (en) * 1983-10-07 1985-05-15 Seiko Koki Kk Automatic film speed setting
GB2158600A (en) * 1984-04-02 1985-11-13 Olympus Optical Co Reading film speed information
EP0212443A2 (en) * 1985-08-15 1987-03-04 EASTMAN KODAK COMPANY (a New Jersey corporation) Pseudo format camera
GB2201004A (en) * 1987-02-05 1988-08-17 Haking W Ets Ltd Filmspeed-corrected digital exposure control system for electronic cameras
GB2227850A (en) * 1989-02-03 1990-08-08 Asahi Optical Co Ltd Automatic exposure camera

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2147712A (en) * 1983-10-07 1985-05-15 Seiko Koki Kk Automatic film speed setting
GB2158600A (en) * 1984-04-02 1985-11-13 Olympus Optical Co Reading film speed information
EP0212443A2 (en) * 1985-08-15 1987-03-04 EASTMAN KODAK COMPANY (a New Jersey corporation) Pseudo format camera
EP0212443A3 (en) * 1985-08-15 1987-05-20 Eastman Kodak Company Pseudo format camera
GB2201004A (en) * 1987-02-05 1988-08-17 Haking W Ets Ltd Filmspeed-corrected digital exposure control system for electronic cameras
GB2201004B (en) * 1987-02-05 1990-09-05 Haking W Ets Ltd Filmspeed-corrected digital exposure control system for electronic cameras
GB2227850A (en) * 1989-02-03 1990-08-08 Asahi Optical Co Ltd Automatic exposure camera
DE4003391A1 (en) * 1989-02-03 1990-08-09 Asahi Optical Co Ltd PHOTOGRAPHIC CAMERA WITH AUTO EXPOSURE
FR2642860A1 (en) * 1989-02-03 1990-08-10 Asahi Optical Co Ltd AUTOMATIC EXPOSURE PHOTOGRAPHIC APPARATUS
GB2227850B (en) * 1989-02-03 1992-10-28 Asahi Optical Co Ltd Automatic exposure camera

Also Published As

Publication number Publication date
GB2010500B (en) 1982-03-31
HK42082A (en) 1982-10-08

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Legal Events

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

Effective date: 19951220