Exposure control device for a camera

Details Exposure control device for a camera Exposure control device for a camera

1976-08-05

1978-04-25

Hix, L. T.

354 34, 354139, 354145, 354149, G03B 1505

Patent

active

040865827

ABSTRACT:
An exposure control device in which the output of a light measuring circuit which produces an electrical signal corresponding to the brightness of an object is compared with an output of a level signal circuit which produces an electrical signal of a predetermined level. When the compared value reaches a predetermined value, a flash circuit is made ready to flash, whereby the shutter time is changed over to a predetermined time suited for a flash photography and the flash circuit is made to flash in association with the shutter operation and the shutter is controlled with a constant time.

REFERENCES:
patent: 3757654 (1973-09-01), Mori
patent: 3917395 (1975-11-01), Ogawa
patent: 3978496 (1976-08-01), Matsumoto

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