Exposure control system having dynamic aperture flash arrangemen

Details Exposure control system having dynamic aperture flash arrangemen Exposure control system having dynamic aperture flash arrangemen

1975-12-22

1977-09-06

Hix, L. T.

354 34, 354133, G03B 714

Patent

active

040471918

ABSTRACT:
A photoresponsive, shutter-diaphragm exposure control system having light regulating blades displaced from a light-blocking position to define increasing aperture values during an exposure interval includes a source of flash illumination which is energized with or just prior to initiation of the exposure interval for flash operation. In this arrangement, the flash illumination envelope is superimposed in a leading arrangement on the aperture opening curve so as to provide increasing illumination intensity in slightly leading relation to the increasing aperture values.

REFERENCES:
patent: 2596671 (1952-05-01), Fuerst
patent: 3659509 (1972-05-01), Burgarella
patent: 3757655 (1973-09-01), Kobayashi
patent: 3942183 (1976-03-01), Whiteside

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