Camera system and intermediate accessory

Details Camera system and intermediate accessory Camera system and intermediate accessory

1990-02-06

1990-10-16

Perkey, W. B.

G03B 1336

Patent

active

049639102

ABSTRACT:
A camera system comprises one or more than two intermediate accessories and the number of the attached intermediate accessories is checked. When the intermediate accessories of more than the permitted number are interposed in the camera system, the automatic focusing operation is prohibited. Therefore, a large driving torque does not occur so as to prevent the bad effect on the camera driving system.

REFERENCES:
patent: 4477164 (1984-10-01), Nakai et al.
patent: 4509846 (1985-04-01), Nakai et al.
patent: 4572638 (1986-02-01), Nakai et al.
patent: 4774540 (1988-09-01), Taniguchi et al.

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