Exposure control system

Details Exposure control system Exposure control system

1973-11-09

1977-12-13

Adams, Russell E.

354 33, 354 34, 354 60E, 354 60L, G03B 708

Patent

active

040632571

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: 3672271 (1972-06-01), Wagner et al.
patent: 3675547 (1972-07-01), Uchiyama et al.
patent: 3855601 (1974-12-01), Uchiyama et al.

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