Automatic exposure control apparatus for single lens reflex came

Details Automatic exposure control apparatus for single lens reflex came Automatic exposure control apparatus for single lens reflex came

1985-07-29

1986-04-15

Perkey, William B.

G03B 708, G03B 720

Patent

active

045824126

ABSTRACT:
An automatic exposure control apparatus for single lens reflex camera on which can be mounted either a lens adaptable for the automatic aperture control mode or a lens adaptable for the manual aperture control mode irrespective of the mode now being selected for the camera, can detect the type of the mounted lens and, when the mounted lens is of the type adaptable for the manual aperture control mode, it makes the camera forcedly select the manual aperture control mode as the exposure control mode thereof.

REFERENCES:
patent: 4086584 (1978-04-01), Kozuki et al.
patent: 4089014 (1978-05-01), Ueda et al.
patent: 4269497 (1981-05-01), Ishizaka et al.
patent: 4290674 (1981-09-01), Kobori et al.
patent: 4357090 (1982-11-01), Araki et al.
patent: 4437744 (1984-03-01), Terui et al.

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