Time delay quench strobe with improved fill-in flash performance

Details Time delay quench strobe with improved fill-in flash performance Time delay quench strobe with improved fill-in flash performance

1976-05-10

1978-02-14

Adams, Russell E.

354 27, 354 34, 354 60F, 354128, 354139, G03B 716

Patent

active

040742881

ABSTRACT:
A photographic camera apparatus is provided with an automatic illumination and exposure control system for controlling a pair of scanning type shutter blade elements as well as a flash fire and quench signal directed to a quench strobe operatively associated therewith. The control system operates to selectively delay the quenching of the strobe as a function of whether the camera is operating in a "fill-in" flash mode of operation or in an ordinary flash mode thereby permitting a dark subject to be adequately illuminated against a lighted background without overexposing the subject.

REFERENCES:
patent: 3756132 (1973-09-01), Ogawa
patent: 3993928 (1976-11-01), Wilwerding

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