1995-05-30
1996-03-12
Adams, Russell E.
354408, G03B 1336
Patent
active
054990742
ABSTRACT:
An autofocus camera conducts a focus detection operation with one of differently directed sets of photoelectric conversion elements which is given priority according to the detected attitude of the camera. If focusing cannot be effected using the elements given priority, a focus detection operation is automatically conducted with the other elements. Also provided is a camera having a first mode of operation in which focusing detecting operations are conducted which collectively utilize outputs of all of the elements of differently directed sets of photoelectric conversion elements when a first camera attitude is detected, and a second mode of operation in which focusing detecting operations are conducted which collectively disregard the output of at least one conversion element when a second camera attitude is detected.
REFERENCES:
patent: 4859842 (1989-08-01), Suda et al.
patent: 4943824 (1990-07-01), Nabeshima et al.
patent: 5144358 (1992-09-01), Tsuni et al.
Matsukawa Nobuo
Mori Ryuichi
Nakano Yoshiyuki
Nishioka Sunao
Ohsawa Keiji
Adams Russell E.
Nikon Corporation
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