Flash photographic apparatus

Details Flash photographic apparatus Flash photographic apparatus

1983-12-27

1985-10-15

Hix, L. T.

354483, 354475, G03B 7097

Patent

active

045470570

ABSTRACT:
In a flash photography apparatus of the type determining an aperture for flash photography based on an integrated value of the reflected light quantity received from an object to be photographed as a result of pre-flashing, the quantity of light received is reduced when the integrated value thereof reaches a predetermined value. Then, the quantity of light received as a result of pre-flashing performed thereafter is integrated and the aperture is determined on the basis of the above integrated value and a signal indicating that the integrated value of the light quantity received has reached a predetermined value.

REFERENCES:
patent: 4460263 (1984-07-01), Gfeller et al.

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