Adobe® Photoshop® 7.0 Classroom in a Book®

Applying a filter effect to a masked selection

To complete the composite of the marsh grasses and Egret image, you’ll isolate the egret as you apply a filter effect to the image background.

1.	In the Layers palette, select the Background.
2.	In the Channels palette, drag the Egret channel to the Load Channel As Selection button () at the bottom of the palette. This loads the channel onto the image. Next, you’ll invert the selection so that the egret is protected and you can work on the background.
3.	Choose Select > Inverse. The previous selection (the egret) is protected, and the background is selected. You can now apply changes to the background ...