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    • 73. 发明授权
    • Camera body
    • 相机机身
    • US08223254B2
    • 2012-07-17
    • US12601637
    • 2008-05-27
    • Norikazu KatsuyamaKenichi Honjo
    • Norikazu KatsuyamaKenichi Honjo
    • H04N5/232
    • H04N5/23209G02B7/36G03B13/36G03B17/14H04N5/23212H04N5/23293H04N2101/00
    • A camera system includes an interchangeable lens and a camera body. The camera body includes an imaging unit, a contrast detection unit, a defocusing amount detection unit, and a body microcomputer. The contrast detection unit is configured to detect a contrast value from an image signal of a subject acquired by the imaging unit, and is configured to detect the focal state of an optical image on the basis of the contrast value. The defocusing amount detection unit is configured to detect the focal state of the optical image by phase difference detection method. The body microcomputer is configured to select either the contrast detection unit or the defocusing amount detection unit on the basis of lens information on the interchangeable lens side.
    • 相机系统包括可互换镜头和照相机主体。 相机主体包括成像单元,对比度检测单元,散焦量检测单元和主体微计算机。 对比度检测单元被配置为从由成像单元获取的被摄体的图像信号中检测对比度值,并且被配置为基于对比度值来检测光学图像的聚焦状态。 散焦量检测单元被配置为通过相位差检测方法检测光学图像的焦点状态。 身体微机被配置为基于可互换镜头侧上的镜头信息来选择对比度检测单元或散焦量检测单元。