Epson Photo Plus - PhotoPlus Color Photo Scanner User's Guide download pdf (Page 45)

Layers and Masks 33

preview), while the Background layer does not. A couple of examples will show

how this rule is applied in PhotoPlus:

Suppose you are creating a new image. The New Image dialog provides

three choices for Background: White, Background Color, and Transparent.

If you pick White or Background Color, the Layers tab shows a single layer

in the new image named "Background." If you pick Transparent, however,

the single layer is named "Layer 1"—and in this case, the image (typically an

animation file) has no Background layer.

If you cut, delete, or move a selection on

the Background layer, the "hole" that's

left exposes the current background

color (as shown on the Color tab). The

same operations on a standard layer

expose a transparent hole.

Selections and layers

With few exceptions, you will work on just one layer at any given time, clicking

in the Layers tab to select the current or active layer. Selections and layers are

related concepts. Whenever there's a selection, certain tools and commands

operate only on the pixels inside the selection—as opposed to a condition where

nothing is selected, in which case those functions generally affect the entire

active layer.

If your image has multiple layers, and you switch to another layer, the selection

doesn't stay on the previous layer—it follows you to the new active layer. This

makes sense when you realize that the selection doesn't actually include image

content—it just describes a region with boundaries.

Operations involving layers

Many standard operations, such as painting, selecting and moving, Clipboard

actions, adjusting colors, applying effects, and so on, are possible on both the

Background layer and standard layers.

Others, such as rearranging the order of layers in the stack, setting up different

color interactions (blend modes and blend ranges) between layers, varying layer

opacity (transparency), applying 2D layer effects and 3D layer effects, using

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Epson Photo Plus - PhotoPlus Color Photo Scanner User's Guide Page 45