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单反怎么设置焦距
更新时间: 2020-11-01 00:00:00  

现在单反相机都是自动变焦。焦距可以不用自己调,如果想自己调节的话,旋转镜头是调焦距的最快方法。焦距,是光学系统中衡量光的聚集或发散的度量方式,指平行光入射时从透镜光心到光聚集之焦点的距离。具有短焦距的光学系统比长焦距的光学系统有更佳聚集光的能力。简单的说焦距是焦点到面镜的中心点之间的距离。照相机中焦距f

关键词: 怎么 设置 焦距

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