Computer type electronic flash device

Details Computer type electronic flash device Computer type electronic flash device

1984-10-05

1986-02-25

Adams, Russell E.

3541451, 354416, G03B 700, G03B 1505

Patent

active

045726442

ABSTRACT:
In the disclosed electronic flash, camera operation at various depths of field is made possible by producing a diaphragm-setting signal in response to a preliminary flash directed at a preliminary object, converting this signal to a digital value, and adjusting the main flash in response to light reflected from a main object and in response to the digitally memorized diaphragm setting signal.

REFERENCES:
patent: 3418904 (1968-12-01), Wick et al.
patent: 3648104 (1972-03-01), Ackermann
patent: 3842428 (1974-10-01), Kawasaki
patent: 4024549 (1977-05-01), Matsumoto
patent: 4349260 (1982-09-01), Ishida et al.
patent: 4367023 (1983-01-01), Ishida et al.
patent: 4373793 (1983-02-01), Taniguchi et al.
patent: 4457611 (1984-07-01), Ishida et al.
patent: 4465353 (1984-08-01), Yoshida et al.
patent: 4484807 (1984-11-01), Kataoka et al.

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