Automatic focusing camera

Details Automatic focusing camera Automatic focusing camera

1997-02-25

1998-11-17

Perkey, W. B.

Photography

Flash system responsive to focal length or distance

396103, G03B 300, G03B 1503

Patent

active

RE0359637

ABSTRACT:
An automatic focusing camera is equipped with an automatic subject distance detecting device for detecting which of a plurality of predetermined distances is nearest to that at which the subject lies. A lens positioning member adjusts an objective lens to a suitable focusing position in which the objective lens has a depth of field straddling that nearest predetermined distance detected by the automatic subject distance detecting device. Another lens positioning member adjusts the objective lens to a focusing position in which the objective lens will be focused on a subject, such as a landscape, at infinity, independently of the distances detected by the automatic subject distance detecting device. The latter objective lens positioning member is externally operable when it is intended to photograph a subject at infinity, before depressing the shutter button.

REFERENCES:
patent: 3953864 (1976-04-01), Iwata et al.
patent: 4291965 (1981-09-01), Johnson et al.
patent: 4300823 (1981-11-01), Yamanaka et al.
patent: 4322141 (1982-03-01), Tominaga et al.
patent: 4501481 (1985-02-01), Kataoka et al.

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