TTL Metering system automatic exposure control camera

Details TTL Metering system automatic exposure control camera TTL Metering system automatic exposure control camera

1978-12-14

1980-04-08

Adams, Russell E.

354 42, 354 51, 354 60R, G03B 708

Patent

active

041969898

ABSTRACT:
An improvement in TTL metering system automatic control camera is disclosed. This type of camera requires a complicate control mechanism. According to the present invention, a substantial simplification of the mechanism is attained by providing the camera with a switch means interlocked with a shutter releasing operation and operable before the diaphragm being conrtrolled by a diaphragm control device, first and second holding circuits, a delay circuit, means for introducing the output of the first holding circuit into the diaphragm control device and means for introducing the output of the second holding circuit into a shutter control device.

REFERENCES:
patent: 3950765 (1976-04-01), Nanba et al.
patent: 4042940 (1977-08-01), Matsuda et al.
patent: 4089014 (1978-05-01), Ueda et al.
patent: 4104655 (1978-08-01), Strauss
patent: 4112441 (1978-09-01), Kawasaki
patent: 4119978 (1978-10-01), Konodo

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