用“HSL/灰度”精确控制图像影调

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Camera Raw主界面的第四个调整项目是"HSL/灰度",它可以精确调整8种特定颜色的色相、饱和度、明亮度,还可以在把照片转换为灰度时根据需要控制每种颜色的亮度。因为调整对象划分很细,并不是调整每一种颜色在照片上都有明显的反映,如果照片中某种颜色的分量很小,即使把滑块拉到头儿也看不出变化,所以,这种调整需要有的放矢地进行。
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