Camera with photoelectric focus detecting device

Details Camera with photoelectric focus detecting device Camera with photoelectric focus detecting device

1979-10-01

1982-08-17

Wintercorn, Richard A.

354 60E, G03B 1318, G03B 1718

Patent

active

043446795

ABSTRACT:
A camera including a photoelectric focus detecting device, the focused condition judgement level of which can be changed in accordance with the range of depth of focus or field of a photographing lens, with the change in an aperture value or value of an iris diaphragm, with the change or difference in the focal length of the lens, or with the difference in the wide-open F-number of an interchangeable lens.

REFERENCES:
patent: 4080531 (1978-03-01), Stauffer
patent: 4142788 (1979-03-01), Matsumoto et al.
patent: 4157217 (1979-05-01), Isono
patent: 4182563 (1980-01-01), Biber

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