Photometric device

Details Photometric device Photometric device

1984-06-29

1985-07-09

Perkey, William B.

G03B 728, G03B 708

Patent

active

045278814

ABSTRACT:
A photometric device in which the photographic field is divided into a plurality of photometric regions, photometric outputs are obtained from each region, the difference between the maximum and minimum values among the photometric outputs is compared with the latitude of the film being used, and one of a highlight reference exposure, average exposure and shadow exposure is selected according to the results of the comparison operation. Accordingly, the available latitude of the film being used is employed maximally.

REFERENCES:
patent: 4176955 (1979-12-01), Yamada et al.
patent: 4182573 (1980-01-01), Yamada et al.
patent: 4309089 (1982-01-01), Harvey
patent: 4397553 (1983-08-01), Yuasa et al.
patent: 4412730 (1984-04-01), Saegusa et al.
patent: 4443080 (1984-04-01), Saegusa
patent: 4445778 (1984-05-01), Nakauchi
patent: 4476383 (1984-10-01), Fukuhara et al.

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