Diaphragm control apparatus for combined use of an electronic fl

Details Diaphragm control apparatus for combined use of an electronic fl Diaphragm control apparatus for combined use of an electronic fl

1980-07-07

1982-08-10

Hix, L. T.

354139, 354271, G03B 1505, G03B 1718

Patent

active

043435440

ABSTRACT:
A diaphragm control apparatus for combined use of an electronic flash with a camera includes a changeover switch which assumes different positions depending whether a flash photography utilizing a usual electronic flash, a flash photography utilizing a devoted electronic flash or normal photography is involved. The apparatus operates to produce a signal indicative of the use of a devoted electronic flash which predominates whenever the devoted electronic flash is mounted on the camera if the changeover switch assumes its position indicative of the use of a usual electronic flash, thus automatically establishing a diaphragm value in a camera which is associated with the devoted electronic flash.

REFERENCES:
patent: 4122463 (1978-10-01), Tanaka
patent: 4285586 (1981-08-01), Kawasaki et al.

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