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安全快门如何计算
更新时间: 2020-11-01 00:00:00  

计算安全快门,一般来说是焦距的2倍快门速度就是安全快门。如果使用的是佳能5D4相机,70-200mm镜头拍摄,当使用200mm拍摄时,安全快门速度为200的倒数:1/200。当使用70mm拍摄时,安全快门为70的倒数:1/70。换句话说,镜头焦段越长,需要的快门速度就越快,否则照片就易被拍虚。

关键词: 安全 快门 如何 计算

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