1990-03-27
1992-02-25
Perkey, W. B.
354441, 354446, G03B 700, G03B 1336
Patent
active
050917420
ABSTRACT:
An auto focusing device or a camera including such a device has a focus detecting circuit for detecting the defocus states of a plurality of objects. A calculation circuit calculates a lens position and an aperture value which are capable of placing at least two of the plurality of objects in focus on the basis of the detected defocus states. When a defocus amount difference between the two objects is outside of a predetermined range, the calculation circuit calculates a lens position capable of placing two other objects, the defocused amount difference between which is within the predetermined range, in focus.
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Aoyama Keisuke
Fukahori Hidehiko
Higashihara Masaki
Itoh Kenji
Suda Yasuo
Canon Kabushiki Kaisha
Perkey W. B.
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