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Technique 52.)Take a look at the Channels palette shown in Figure 34-2. The Arches National Park photo that I’m using for these examples is set in RGB color mode, so you see three individual color channels. (At the top of the Channels palette is the composite channel that shows the three channels combined.)
Figure 34-2: You can select a channel for use as a grayscale image.
To select an individual channel for use as a grayscale image, click each channel in the Channels palette to view it in the image window. When you decide on the channel you want to use, drag the other channels to the trashcan icon at the bottom of the Channels palette.
Figure 34-1. Also, the overall cast of the green grayscale channel is brighter than the grayscale conversion.
Figure 34-3: The three channels that make up the Arches National Park photograph.
