1992-05-11
1994-02-01
Gray, David M.
35419512, G03B 1300
Patent
active
052836070
ABSTRACT:
An image magnification control device for a camera. Control focal length required to maintain an image magnification constant is computed based upon defocus information detected by using a light having passed through a photographic lens. In case focal length of the photographic lens comes out of a range wherein the set image magnification can be obtained, various operations such as shutter-release lock operation are executed depending upon designs.
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Kawasaki Masahiro
Suzuki Noboru
Toji Shigeo
Asahi Kogaku Kogyo Kabushiki Kaisha
Gray David M.
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