Camera with automatic focus and exposure control means

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United States of America Patent

PATENT NO 4792820
SERIAL NO

06905974

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Abstract

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A camera with an AF and AE control structure including a one-shot AF mode and a continuous AF mode, in which the operability and exposure control are improved. The camera includes a unit for detecting a focusing condition of an objective lens, defined by the relationship between a position of an object to be photographed against the lens and a focus point of the lens; a unit for focusing the lens in accordance with the detected focusing condition so that the lens is moved to the in-focus position, a first light measurement unit for measuring light at a spot area corresponding to a region of the object to be detected at the detecting unit, a second light measurement means for measuring averaged light at another area broader than the first area, and a unit for controlling exposure amount. The exposure control unit determines the exposure amount on the basis of the spot metering data in a one-shot AF mode, or the averaged light measuring data which is defined as a data at a time, at least, when the lens is adjacent to the in-focus position, in a continuous AF mode.

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Patent Owner(s)

  • MINOLTA CAMERA KABUSHIKI KAISHA

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hamada, Masataka Osaka, JP 215 3169
Ishida, Tokuji Daito, JP 150 2504
Karasaki, Toshihiko Sakai, JP 69 1394
Norita, Toshio Sakai, JP 94 2089
Taniguchi, Nobuyuki Nishinomiya, JP 260 5017

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