Camera capable of performing divisional photometry

Details Camera capable of performing divisional photometry Camera capable of performing divisional photometry

1995-05-25

1996-12-24

Adams, Russell E.

Photography

Exposure control circuit

Having plural photocells

396274, G03B 708

Patent

active

055877656

ABSTRACT:
The camera capable of performing divisional photometry according to the present invention includes a photometric sensor which is made up from a plurality of photoelectric conversion sub-elements arranged in close proximity to one another over a predetermined light receiving region in a two dimensional array and which performs divisionally photometry on the photographic field divided into a plurality of regions, an image projection optical system which projects an image of a photographic field upon light receiving surfaces of a proper subset of this plurality of photoelectric conversion sub-elements which occupies a region which is smaller than the predetermined light receiving region, and a calculation device which calculates an exposure value based upon the photometric outputs from the proper subset of the plurality of photoelectric conversion sub-elements.

REFERENCES:
patent: 4364650 (1982-12-01), Terashita
patent: 4394078 (1983-07-01), Terashita
patent: 4420252 (1983-12-01), Nakauchi
patent: 4445778 (1984-05-01), Nakauchi
patent: 4855780 (1989-08-01), Hayakawa
patent: 4929824 (1990-05-01), Miyazaki

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