1987-04-29
1988-11-01
Adams, Russell E.
354432, G03B 1505
Patent
active
047823577
ABSTRACT:
A light measuring device for a camera comprises a light receiving circuit having a plurality of light receiving portions for seeking an area brightness information of each of at least two areas into which the field of view is divided, including a central area located at a center of the field of view and an outer area located outside of the central area, a discrimination circuit for discriminating whether or not the camera has been set in the fill-in flash mode, and a computing circuit for seeking a measuring light value by a computation formula including at least one brightness information out of the plurality of brightness informations sought by the light receiving circuit as a function, the computing circuit performing the light value computation with a weight on the area brightness information of the outer area when the setting of a flash exposure in the fill-in flash mode has been discriminated by the discriminating circuit.
REFERENCES:
patent: 4429969 (1984-02-01), Saegusa
patent: 4445778 (1984-05-01), Nakauchi
patent: 4476383 (1984-10-01), Fukuhava et al.
patent: 4561752 (1985-12-01), Miyamoto et al.
patent: 4566775 (1986-01-01), Tsunekawa
Hayakawa Shingo
Kiyohara Shuichi
Adams Russell E.
Canon Kabushiki Kaisha
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