Automatic exposure camera

Details Automatic exposure camera Automatic exposure camera

1985-02-20

1986-12-16

Adams, Russell E.

35428912, G03B 7097

Patent

active

046293051

ABSTRACT:
An automatic exposure camera in which any one of four modes, specifically, an aperture-priority automatic exposure mode, a shutter-speed-priority automatic exposure mode, a programmed automatic exposure mode and a manual exposure mode, can be readily set with reduced danger of improper selection. An automatic/manual switch is operated in association with a lens aperture ring to select one of an automatic aperture mode and a manual aperture mode for a lens of the camera. A mode A counter responds to the output of the automatic/manual switch to be made active when the automatic aperture mode is selected, and a mode M counter responds to the automatic/manual switch to be made active when the manual mode is selected. The output of one of the mode A counter and the mode M counter is selected for counting signals from the up or down switch to thereby set the exposure mode according to a count value so obtained.

REFERENCES:
patent: 4171884 (1979-10-01), Tokutomi et al.
patent: 4286849 (1981-09-01), Uchidoi et al.
patent: 4483601 (1984-11-01), Sekida et al.
patent: 4497564 (1985-02-01), Meguro et al.
patent: 4538891 (1985-09-01), Matsuyama et al.

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