Camera system

Details Camera system Camera system

1984-02-22

1985-08-27

Perkey, William B.

354484, 354219, G03B 300, G03B 728, G03B 1302

Patent

active

045374880

ABSTRACT:
A camera system for a single lens reflex camera of a view-finder interchangeable type of a construction, wherein the interchangeable view-finder provided with a focus detection device and having a battery for the focus detection device built in it is detachably mounted on the camera body provided with an exposure meter and having a battery for the exposure meter built in it, and a battery checking device is provided on each of the view-finder device and the camera body, whereby, when the battery in the camera body is used up, the operations of the exposure meter in the camera body and the focus detection in the view-finder device are stopped.

REFERENCES:
patent: 3812499 (1974-05-01), Hayashi et al.
patent: 4104650 (1978-08-01), Hosoe et al.
patent: 4350418 (1982-09-01), Taguchi et al.
patent: 4460258 (1984-07-01), Fukuhara et al.

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