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Layer Mode Types

This section describes layer modes in the order they appear in the Modes pull-down menu, and groups them into loose categor ies. Note that most modes are based on the pixel values of visible channels, not transparency information. However, modes in the transparency, stencil and silhouette, and alpha manipulation categories do alter alpha channels.

The result of a layer mode depends on various aspects of the image to which it's applied, as well as aspects of the underlying image. Each mode may be better suited to certain types of images, and vice versa. For the sake of comparison, each mode in the following examples is applied to the image in Figure 12.15, to blend it with the underlying image in Figure 12.16. Of course, these black and white figures can't represent how modes affect the final color. But it's more important that you understand the description of what information the mode uses to calculate the final image; you can always see the full-color results for yourself.


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