Water-proof photographic camera with an automatic focusing devic

Details Water-proof photographic camera with an automatic focusing devic Water-proof photographic camera with an automatic focusing devic

1983-09-16

1984-09-11

Adams, Russell E.

354 64, G03B 300, G03B 1708

Patent

active

044706804

ABSTRACT:
In a water-proof photographic camera with an automatic focusing device, a taking lens will be moved to a best-in-focus position by the automatic focusing device when it is detected that the camera is in air enrivonment, and to a fixed focusing position corresponding to a value of camera-to-object distance that is expected to be most frequently used in underwater photography or a value of distance in accordance with an available amount of light emitted from an electric flash device when it is detected that the camera is in a water environment.

REFERENCES:
patent: 4168897 (1979-09-01), Gates

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