Camera

Details Camera Camera

1990-04-16

1992-01-21

Perkey, W. B.

354479, 354199, 354219, 354233, 354236, G03B 7099, G03B 908, G03B 1304, G03B 1336

Patent

active

050831496

ABSTRACT:
A camera having a photographing optical system including photographing lenses capable of carrying out a zooming, a viewfinder optical system composed of an optical system different from those of the photographing lenses, a photometric system having an optical system different from those of the photographing lenses, and a focus condition detecting system for detecting the focus condition of an object based on a light which has passed through the photographing lenses.

REFERENCES:
patent: 3504610 (1970-04-01), Donitz
patent: 3860935 (1975-01-01), Stauffer
patent: 4684995 (1987-08-01), Baumeister
patent: 4853731 (1989-08-01), Tsujimura et al.
Modern Photography, pp. 50-56, Apr. 1989.
Modern Photography, pp. 44-54, May 1986.
Modern Photography, pp. 27-30, Mar. 1988.

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