Adobe® Photoshop® CS3 Classroom in a Book®

Chapter 6. Masks and Channels

Adobe Photoshop uses masks to isolate and manipulate specific parts of an image. A mask is like a stencil. The cutout portion of the mask can be altered, but the area surrounding the cutout is protected from change. You can create a temporary mask for one-time use, or you can save masks for repeated use.

<feature><title>Lesson overview</title>

In this lesson, you’ll learn how to do the following:

• Refine a selection using a quick mask.

• Save a selection as a channel mask.

• View a mask using the Channels palette.

• Load a saved mask.

• Apply filters, effects, and blend modes to a mask.

• Move an image within a mask.

• Create a layer mask. ...