Exposure control system

Details Exposure control system Exposure control system

1977-05-17

1979-11-13

Adams, Russell E.

354 31, 354 38, 354139, G03B 716

Patent

active

041741617

ABSTRACT:
In the exposure control system disclosed, a first photoelectric element responds to light from a scene to be photographed. A second photoelectric element is a spot sensor set to respond from a portion of the scene to be photographed. An exposure control circuit which is coupled to the first and second photoelectric elements controls the shutter and aperture on the basis of at least the relationship between the responses of the first and second photoelectric elements.

REFERENCES:
patent: 3457844 (1969-07-01), Kitai
patent: 3511144 (1970-05-01), Gotze
patent: 3633476 (1972-01-01), Yazaki
patent: 3687028 (1972-08-01), Rentschler
patent: 3688663 (1972-09-01), Uchiyama et al.
patent: 3720144 (1973-03-01), Uchiyama
patent: 3750544 (1973-08-01), Akiyama
patent: 3855601 (1974-12-01), Uchiyama et al.

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