Photometer for a camera

Details Photometer for a camera Photometer for a camera

1995-06-22

1997-10-14

Metjahic, Safet

Photography

Exposure control circuit

Having plural photocells

396290, G03B 708, G03B 1718

Patent

active

056780796

ABSTRACT:
A photometer for a camera that performs multi-area photometry and displays the exposure deviation to the photographer. The photometer includes a light measuring device with a plurality of photometric elements that perform photometry at a plurality of areas within the photographic field. A photometric value determining section calculates an effective photometric value using a weighted addition of each photometric value according to the given photometric mode. A standard value determining section calculates a reference photometric value using a predetermined, specified weighted addition of each photometric value. A deviation determining section calculates the deviation in the logarithmic values of the effective photometric value and the reference photometric value. A display device displays the deviation calculated by the deviation determining section.

REFERENCES:
patent: 4309091 (1982-01-01), Fukuhara et al.
patent: 4448506 (1984-05-01), Saegusa et al.
patent: 4760270 (1988-07-01), Miller
patent: 5146258 (1992-09-01), Bell et al.
patent: 5479237 (1995-12-01), Kitaoka

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