1975-06-16
1978-06-20
O'Connor, Edna M.
354 49, 354270, G03B 700, G03B 904
Patent
active
040964957
ABSTRACT:
A camera is provided with a scissors-type iris having apertures of different shapes and areas formed by the pair of blades. In one mode of operation, with a "flash" setting, a control mechanism automatically adjusts the iris opening in accordance with the focus distance setting and further compensates the iris opening in accordance with an image brightness adjustment. The iris adjustment mechanism automatically is adjusted to certain predetermined positions when the controls are set for other modes of operation, and exposure is then controlled by an electronic shutter timing mechanism which may be varied by a sliding vane brightness adjustment.
REFERENCES:
patent: 317788 (1885-05-01), Hoover
patent: 3442194 (1969-05-01), Sho
patent: 3446133 (1969-05-01), Starp
patent: 3478660 (1969-11-01), Land
patent: 3589258 (1971-06-01), Koeber
patent: 3783761 (1974-01-01), Schild et al.
patent: 3810207 (1974-05-01), Muellen
patent: 3846807 (1974-11-01), Sekine
patent: 3916425 (1975-10-01), Tanaka
Faris Edwin E.
Nesson Israel
Palmer Robert G.
Berkey Photo, Inc.
O'Connor Edna M.
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