Apparatus for establishing automatic exposure control modes in e

Details Apparatus for establishing automatic exposure control modes in e Apparatus for establishing automatic exposure control modes in e

1979-12-21

1981-09-22

Hix, L. T.

354 60L, G03B 720, G03B 1718, G03B 7087

Patent

active

042906741

ABSTRACT:
A lens exchangeable camera has two automatic exposure control modes, one of which is a program exposure control mode and the other of which is an aperture priority automatic shutter speed control mode. The program exposure control mode is selected when a diaphragm presetting ring on an exchangeable lens mounted on the camera is set to a position to preset a minimum aperture size or maximum f-number. The aperture priority automatic shutter speed control mode is selected when the diaphragm presetting ring is set to a position to preset an aperture size other than the minimum aperture.

REFERENCES:
patent: 3829867 (1974-08-01), Ono
patent: 4037235 (1977-07-01), Ueda
patent: 4118726 (1978-10-01), Kuramoto
patent: 4140380 (1979-02-01), Ueda et al.
patent: 4150889 (1979-04-01), Ueda et al.

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