Page 154 - Photoshop for Lightroom Users – Scott Kelby 2nd Edition
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Go under the Image menu, under Mode, and choose Lab Color. In the dialog that appears, click Don’t Flatten. You won’t notice any change at this point—
the image will look the same—but if you looked in the Channels panel (found under the Window menu), you’d see that instead of the image being made up
of a Red, Green, and Blue channel, the image is separated, so the Lightness (detail) is one channel, and the other two are color channels named “a” and “b.”
Just an FYI.
Step Three:
Next, go under the Image menu and choose Apply Image. From the Channel pop-up menu, choose “b,” and from the Blending pop-up menu, choose
Overlay (as seen here), and you’ll immediately see the fall effect appear in your image. If it’s too intense, lower the Opacity amount (you’ll have to type in
a number if you want to change it—there’s no slider for it in this dialog) until it looks right to you. Once it does, click OK.
Step Four:
