Exposure control device for camera

Details Exposure control device for camera Exposure control device for camera

1984-11-13

1986-02-25

Adams, Russell E.

354439, 354230, G03B 7097

Patent

active

045726450

ABSTRACT:
An exposure control device for camera includes a detector for detecting the opening of a sector shutter. By detecting an actual opening of the sector shutter, an amount of incremental exposure is calculated based on the opening and the corresponding time interval. Such amount is accumulated to provide an accumulated value. An amount of proper exposure is determined on the basis of photographing information including the brightness of an object being photographed and a film speed. The sector shutter is controlled in accordance with the accumulated value and the amount of proper exposure.

REFERENCES:
patent: 4053907 (1977-10-01), Iwata et al.
patent: 4354748 (1982-10-01), Grimes et al.
patent: 4360258 (1982-11-01), Hashimoto
patent: 4362372 (1982-12-01), Kiesel

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