Focusing device in camera equipped with both standard and teleph

Details Focusing device in camera equipped with both standard and teleph Focusing device in camera equipped with both standard and teleph

1980-07-10

1981-04-28

Griffin, Donald A.

354289, G03B 302, G03B 1700

Patent

active

042641756

ABSTRACT:
In a camera equipped with both a standard lens and a telephoto lens which may be arbitrarily selected for exposures by manipulating a first control knob, a focusing device is provided which selects the focusing ranges or depths of field of the telephoto lens by a second control knob only in the case of the photography with the telephoto lens.

REFERENCES:
patent: 3903537 (1975-09-01), Ettischer
patent: 3913113 (1975-10-01), Yamashita
patent: 4119983 (1978-10-01), Tanaka
patent: 4204760 (1980-05-01), Kobayashi

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