CA1015588A - Method and apparatus for displaying the amount of exposure in a single lens reflex camera using an electronic shutter - Google Patents

Method and apparatus for displaying the amount of exposure in a single lens reflex camera using an electronic shutter

Info

Publication number
CA1015588A
CA1015588A CA206,654A CA206654A CA1015588A CA 1015588 A CA1015588 A CA 1015588A CA 206654 A CA206654 A CA 206654A CA 1015588 A CA1015588 A CA 1015588A
Authority
CA
Canada
Prior art keywords
exposure
displaying
amount
single lens
electronic shutter
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
CA206,654A
Other languages
English (en)
Other versions
CA206654S (en
Inventor
Akira Takahashi
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 JP48089813A external-priority patent/JPS5047619A/ja
Priority claimed from JP9672573A external-priority patent/JPS5321648B2/ja
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Application granted granted Critical
Publication of CA1015588A publication Critical patent/CA1015588A/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
    • 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
    • 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
    • G03B19/00—Cameras
    • G03B19/02—Still-picture cameras
    • G03B19/12—Reflex cameras with single objective and a movable reflector or a partly-transmitting mirror
    • 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
    • G03B7/093—Digital circuits for control of exposure time

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Indication In Cameras, And Counting Of Exposures (AREA)
CA206,654A 1973-08-10 1974-08-09 Method and apparatus for displaying the amount of exposure in a single lens reflex camera using an electronic shutter Expired CA1015588A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP48089813A JPS5047619A (it) 1973-08-10 1973-08-10
JP9672573A JPS5321648B2 (it) 1973-08-30 1973-08-30

Publications (1)

Publication Number Publication Date
CA1015588A true CA1015588A (en) 1977-08-16

Family

ID=26431225

Family Applications (1)

Application Number Title Priority Date Filing Date
CA206,654A Expired CA1015588A (en) 1973-08-10 1974-08-09 Method and apparatus for displaying the amount of exposure in a single lens reflex camera using an electronic shutter

Country Status (2)

Country Link
CA (1) CA1015588A (it)
IT (1) IT1019794B (it)

Also Published As

Publication number Publication date
DE2438474B2 (de) 1977-05-26
IT1019794B (it) 1977-11-30
DE2438474A1 (de) 1975-02-27

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