Selections and Cutouts - The Photoshop: Professional Retouching and Compositing Tips, Tricks, and Techniques - page 64

Edge to pick up all the hair on the mane. These selections have been saved, so all that re-
mains is to select the hair on the giraffe's tail.
Figure 1.76
1. In the Channels panel, click the Red, Green, and Blue channels in turn. I am look-
ing for the channel that gives the most contrast between the tail hair and the back-
ground; in this case, it's the Green channel ( Figure 1.77 and 1.78 ).