Patent
1979-09-13
1981-03-10
Hix, L. T.
354 33, 354 34, 354137, 354145, 354 29, 354 59, G03B 1505
Patent
active
042550300
ABSTRACT:
A photographic exposure control system is provided for controlling the firing of an electronic flash of the quench type so as to automatically provide a proportional fill flash under conditions of substantial ambient scene light intensity. The photographic exposure control system may also control the firing of electronic quench flash under conditions of negligible ambient scene light intensity wherein the proportion of the exposure value attributable to the artificial scene light automatically increases in correspondence with the decrease in the ambient scene light intensity.
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Johnson Bruce K.
Whiteside George D.
Hix L. T,.
Perkey William B.
Polaroid Corporation
Roman Edward S.
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