JPS5735837A - Exposure controller of camera - Google Patents

Exposure controller of camera

Info

Publication number
JPS5735837A
JPS5735837A JP11135480A JP11135480A JPS5735837A JP S5735837 A JPS5735837 A JP S5735837A JP 11135480 A JP11135480 A JP 11135480A JP 11135480 A JP11135480 A JP 11135480A JP S5735837 A JPS5735837 A JP S5735837A
Authority
JP
Japan
Prior art keywords
film
camera
code
refractivity
reflectivity
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.)
Pending
Application number
JP11135480A
Other languages
Japanese (ja)
Inventor
Yasuo Yamazaki
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.)
Minolta Co Ltd
Original Assignee
Minolta 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
Application filed by Minolta Co Ltd filed Critical Minolta Co Ltd
Priority to JP11135480A priority Critical patent/JPS5735837A/en
Publication of JPS5735837A publication Critical patent/JPS5735837A/en
Pending 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure Control For Cameras (AREA)

Abstract

PURPOSE:To make corrections corresponding to the refractivity of the surface of a film in use by giving the film a code showing its refractivity, by reading the code, and by making the corrections on the basis of the read code information. CONSTITUTION:Between adjacent perforations in the one-side specific area 3 of the leader part of a film 1, small holes h1-h4 are formed as codes. The film press- contacting plate 4 of a camera, on the other hand, is provided with LEDs 5 and 6 and the camera body 7 is provided with photodiodes 8 and 9 facing to these LEDs 5 and 6. As the loaded film 1 is wound, the diodes 8 and 9 output a light current each time a perforation or small hole passes. The positions of the small holes h1- h4 show a code which corresponds to the reflectivity of the film 1 in use. For this purpose, the data of the exposure circuit of the camera is corrected on the bias of the code information to make corrections corresponding to the reflectivity of a used film.
JP11135480A 1980-08-12 1980-08-12 Exposure controller of camera Pending JPS5735837A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11135480A JPS5735837A (en) 1980-08-12 1980-08-12 Exposure controller of camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11135480A JPS5735837A (en) 1980-08-12 1980-08-12 Exposure controller of camera

Publications (1)

Publication Number Publication Date
JPS5735837A true JPS5735837A (en) 1982-02-26

Family

ID=14559062

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11135480A Pending JPS5735837A (en) 1980-08-12 1980-08-12 Exposure controller of camera

Country Status (1)

Country Link
JP (1) JPS5735837A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61238030A (en) * 1985-04-15 1986-10-23 Nippon Kogaku Kk <Nikon> Controller for quantity of exposure
JPS61196092U (en) * 1985-05-28 1986-12-06

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61238030A (en) * 1985-04-15 1986-10-23 Nippon Kogaku Kk <Nikon> Controller for quantity of exposure
JPS61196092U (en) * 1985-05-28 1986-12-06
JPH0415520Y2 (en) * 1985-05-28 1992-04-07

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