Manual aperture value setting circuit for camera

Details Manual aperture value setting circuit for camera Manual aperture value setting circuit for camera

1984-11-16

1985-12-17

Adams, Russell E.

354286, 3542891, G03B 7095

Patent

active

045589402

ABSTRACT:
A manual aperture value setting circuit for a camera in which digital values corresponding to the full-aperture value and the minimum aperture value of a lens mounted on a camera are applied from the lens in digital form to a logic circuit which operates so that, with the range of aperture value set on the side of the camera being maintained in the aperture value range of the lens, the aperture value which has been set is changed to the full-aperture value or the minimum aperture value of the lens when it is out of the aperture value range of the lens.

REFERENCES:
patent: 4081813 (1978-03-01), Kawamura et al.
patent: 4089011 (1978-05-01), Date et al.
patent: 4286849 (1981-09-01), Uchidoi
patent: 4304482 (1981-12-01), Suzuki et al.
patent: 4437752 (1984-03-01), Akashi et al.
patent: 4455068 (1984-06-01), Izuhara
patent: 4483601 (1984-11-01), Sekida et al.

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