Photometric method and apparatus for cameras

Details Photometric method and apparatus for cameras Photometric method and apparatus for cameras

1986-01-15

1987-01-13

Perkey, William B.

G03B 708, G03B 720, G03B 728

Patent

active

046360549

ABSTRACT:
A camera comprises means for dividing a field to be photographed into a plurality of metering sections and metering the metering sections in a photometry menner to produce a plurality of metering outputs respectively corresponding to the metering sections, and means for operation processing said plurality of metering outputs to produce a value corresponding to a desired proper brightness value, the value being used to control exposure in the camera. The camera comprises means for discriminating the type of a lens mounted, means for producing an output signal indicative of photometry mode, means for operation processing said value corresponding to the proper brightness value, and means for changing said operation processing in accordance with said output signal indicative of said photometry mode.

REFERENCES:
patent: 4306787 (1981-12-01), Fukuhara et al.
patent: 4391500 (1983-07-01), Tsunekawa
patent: 4477164 (1984-10-01), Nakai et al.

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