Disablement of shutter release in photographic camera having int

Details Disablement of shutter release in photographic camera having int Disablement of shutter release in photographic camera having int

1981-07-23

1983-05-10

Perkey, William B.

354286, G03B 1738

Patent

active

043826695

ABSTRACT:
A photographic camera of interchangeable lens type has an interchangeable objective that can be removably mounted on a camera body and a plurality of switches each capable of assuming a first or a second state. The switches all assume the same state when the objective is removed from the camera body and selectively assume the first and second states according to the value of at least one lens characteristic when the objective is mounted on the camera body. An automatic exposure control mechanism is operated responsive to the selectively assumed states of the switches when the objective is mounted on the camera body. A shutter release mechanism is disabled responsive to said same state of all the switches.

REFERENCES:
patent: 3525292 (1970-08-01), Okamoto
patent: 4118713 (1978-10-01), Murakami et al.

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