1980-03-31
1981-11-10
Bellner, Michael L.
354 33, 354 60F, 354137, G03B 7091, G03B 1505
Patent
active
042994616
ABSTRACT:
A dual mode range responsive exposure and flash fire control system operates as a function of the photographic subject being located in either a near distance or a far distance range from the camera. For photographic subjects located within a near camera-to-subject distance range, a flash fire signal is normally provided during the exposure interval at the instant when the blade mechanism defines an aperture size generally corresponding to the camera-to-subject distance to ignite the flash and provide a determinate amount of illumination. For photographic subjects located within a far camera-to-subject distance range, a flash fire signal is normally provided subsequent to the shutter blades reaching a maximum aperture defining position with the flash output being subsequently quenched as a function of scene light detection and integration.
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U.S. Patent Application Ser. No. 42,912 filed May 29, 1979 by Coppa, R. J.
Coppa Richard J.
Lim James K.
Ostrowski John C.
Rodriguez Marie T.
Bellner Michael L.
Polaroid Corporation
Roman Edward S.
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