Exposure propriety indicating device for flash-photography

Details Exposure propriety indicating device for flash-photography Exposure propriety indicating device for flash-photography

1976-03-30

1978-06-20

Hix, L. T.

354 53, 354 60L, G03B 1502

Patent

active

040964981

ABSTRACT:
An exposure propriety indicating device for flash-photography constructed with a circuit comprising a film sensitivity signal generating circuit, an aperture value signal generating circuit, a comparison circuit for comparing signals generated by the two generating circuits, and an indicator circuit for indicating the result of such comparison.

REFERENCES:
patent: 3849769 (1974-11-01), Chilia
patent: 3973267 (1976-08-01), Hashimoto
patent: 3982254 (1976-09-01), Ito et al.

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