Title:
ELECTRONIC CAMERA WITH FOCUS DETECTION FUNCTION
Document Type and Number:
Japanese Patent JP3893708
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To flexibly and appropriately execute the reliability judgement of a focus detected result matched with the exchange of an image pickup unit in an electronic camera with focus detection function.
SOLUTION: In this electronic camera with a focus detection function provided with an image pickup means 1 for picking up optical images formed by a photographing optical system Z and outputting the image signals, a focus detection means 2 for detecting the focus adjustment state of the photographing optical system Z and a reliability judgement means 3 for judging reliability for the detected result of the focus detection means 2 and judging whether or not a focus is detectable, a reliability reference change means 5 for changing the judgement reference of the reliability judgement means 3 corresponding to the picture element density of the image pickup means 1 is provided.
Inventors:
Shinji Uchiyama
Application Number:
JP34647697A
Publication Date:
March 14, 2007
Filing Date:
December 16, 1997
Export Citation:
Assignee:
NIKON CORPORATION
International Classes:
G02B7/28; H04N5/232; G03B17/02; H04N5/225; H04N101/00; (IPC1-7): H04N5/232; G02B7/28; G03B17/02
Domestic Patent References:
| JP8076007A |
Attorney, Agent or Firm:
Furuya Fumio
Eisuke Suzuki
Eisuke Suzuki