发明名称 |
Lens-interchangeable camera performing focus control, lens barrel, and program |
摘要 |
A lens-interchangeable camera includes a focus detector performing focus detection and a controller performing a drive control of a lens based on a defocus amount. The controller finishes focusing operation without driving the lens when the defocus amount is out a range of a first in-focus determination width, and performs the focusing operation when the defocus amount is out a range of the first in-focus determination width. The controller finishes the focusing operation without performing the focus detection again after completing the drive when the defocus amount is out a range of a second in-focus determination width, and performs the focus detection again after completing the drive when the defocus amount is out a range of the second in-focus determination width. The second in-focus determination width is set to be greater than the first in-focus determination width and be greater than or equal to a drive limit value.
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申请公布号 |
US8355626(B2) |
申请公布日期 |
2013.01.15 |
申请号 |
US201113109378 |
申请日期 |
2011.05.17 |
申请人 |
CANON KABUSHIKI KAISHA;ISHIKAWA MASANORI;TAMURA MASAHISA;OKADA TADANORI;YAMANAKA TAKUMI;SASAKI KUNIHIKO;MURAKAMI YASUSHI;SHIMADA SHOTA;NAKAYAMA TAKEYA |
发明人 |
ISHIKAWA MASANORI;TAMURA MASAHISA;OKADA TADANORI;YAMANAKA TAKUMI;SASAKI KUNIHIKO;MURAKAMI YASUSHI;SHIMADA SHOTA;NAKAYAMA TAKEYA |
分类号 |
G03B13/22 |
主分类号 |
G03B13/22 |
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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