Automatic photographing apparatus in a camera

Details Automatic photographing apparatus in a camera Automatic photographing apparatus in a camera

1995-06-07

1997-06-17

Adams, Russell E.

Photography

Camera release control circuit

Self-timer

396265, 396 89, G03B 1336

Patent

active

056402244

ABSTRACT:
A camera which prevents an invading body from being photographed and yet prevents a self-timer photographing time from being prolonged wastefully. The camera includes a distance measuring device for detecting object distances, a photo-taking device for effecting photo-taking and an angle of field switching device for switching the angle of field of a photo-taking lens in conformity with ON or OFF switches that are connected to a controller for carrying out a self-timer photographing process. During self-timer operation, the time counting of a main timer is started and object distance is repetitively measured. When object distances vary, time counting by the main timer is interrupted and an auxiliary timer is actuated so that self-timer photographing time is prolonged by the time set by the auxiliary timer. After the termination of time counting by the auxiliary timer, time counting by the main timer is restarted. When the angle of field of the lens is wider than or the passage position of the invading body is nearer to the object, the set time of the auxiliary timer is made longer to thereby prevent the waste of time that is necessary to carry out photographic operations.

REFERENCES:
patent: 4350418 (1982-09-01), Taguchi et al.
patent: 5047793 (1991-09-01), Shiomi
patent: 5184166 (1993-02-01), Shiina et al.
patent: 5216459 (1993-06-01), Kosaka et al.

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