发明名称 |
CAMERA |
摘要 |
PROBLEM TO BE SOLVED: To provide a camera for appropriately calculating a focus evaluation value in accordance with a photographing condition related to a photographing distance up to a subject in the camera for using an imaging signal of an image pickup device to perform a focusing operation with a contrast method. SOLUTION: The image pickup device 103 images a subject image through a photographing lens 101. A focus evaluation value is respectively calculated at each lens position while moving a focusing lens between the shortest position at a close side and the most end position at an infinite side. The focusing operation of the photographing lens 101 is stopped at a lens position where the focus evaluation value shows a peak value. In the case a long-distance view mode is selected, a focus evaluation value of the infinity side is weighted. Thus focusing on a subject at a long-distance view side is quickly adjusted. |
申请公布号 |
JP2003107331(A) |
申请公布日期 |
2003.04.09 |
申请号 |
JP20010302486 |
申请日期 |
2001.09.28 |
申请人 |
NIKON CORP;NIKON GIJUTSU KOBO:KK |
发明人 |
WATANABE TOSHIMI;HIBINO HIDEOMI;MAEDA TOSHIAKI;OTA MASA |
分类号 |
G03B7/17;G02B7/28;G02B7/36;G03B7/28;G03B13/36;G03B15/05;G03B17/02;H04N5/232;H04N101/00 |
主分类号 |
G03B7/17 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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