Photographic apparatus and measurement method of exposure condit

Details Photographic apparatus and measurement method of exposure condit Photographic apparatus and measurement method of exposure condit

1984-10-04

1986-10-21

Adams, Russell E.

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354432, 354 76, 355 56, G03B 7099, G03B 2774

Patent

active

046182390

ABSTRACT:
A photographic apparatus comprises a photoelectric camera arranged movably at the position of the lens of the photographic apparatus and a picture signal processing circuit connected electrically with the photoelectric camera and adapted to process picture signals, which have been input to the photoelectric camera, so as to measure given exposure conditions. It is possible to determine exposure conditions with good accuracy by measuring accurately variations in illumination conditions. The present invention allows highly-accurate measurements under preferred conditions.

REFERENCES:
patent: 3546378 (1970-12-01), Karikawa
patent: 3832058 (1974-08-01), Gusovius
patent: 3883883 (1975-05-01), Sano et al.
patent: 4021115 (1977-05-01), Jeppesen
patent: 4364650 (1982-12-01), Terashita et al.
patent: 4488804 (1984-12-01), Takagi

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