
一、高光的选择方法
第一种方法:菜单-图像-计算,灰灰通道正片叠底计算。
第二种方法:常用简易做法,CTRL+ALT+~或者按CTRL同时点击RGB通道得到选区。
二、中间调的选择方法
第一种方法:菜单-图像-计算,灰和灰反通道计算,混合模式正片叠底。
第二种方法:菜单-图像-计算,灰灰通道计算,混合模式排除。
三、暗调的选择方法
菜单-图像-计算,灰反和灰反通道计算,混合模式正片叠底。

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