
PHOTOSHOP CS3
User Guide
319
A vector mask creates a sharp-edged shape on a layer and is useful anytime you want to add a design element with
clean, defined edges. After you create a layer with a vector mask, you can apply one or more layer styles to it, edit
them if needed, and instantly have a usable button, panel, or other web-design element.
See also
“About masks and alpha channels” on page 269
Add layer masks
Whenyouaddalayermask,youneedtodecideifyouwanttohideorshowallofthelayer.Later,you’llpaintonthe
mask to hide portions of that layer and reveal the layers beneath. Or, you can create a layer mask that automatically
hides a portion of the layer by making a selection before creating the mask.
Add a mask that shows or hides the entire layer
1
Make sure that no part of your image is selected. Choose Select > Deselect.
2 In the Layers palette, select the layer or group.
3 Do one of the following:
• To create a mask that reveals the entire layer, click the New Layer Mask button in the Layers palette, or choose
Layer > Layer Mask > Reveal All.
• To create a mask that hides the entire layer, Alt-click (Windows) or Option-click (Mac OS) the New Layer Mask
button, or choose Layer > Layer Mask > Hide All.
Add a layer mask that hides part of a layer
1
In the Layers palette, select the layer or group.
2 Select the area in the image, and do one of the following:
• Click the New Layer Mask button in the Layers palette to create a mask that reveals the selection.
• Alt-click (Windows) or Option-click (Mac OS) the New Layer Mask button to create a mask that hides the
selection.
• Choose Layer > Layer Mask > Reveal Selection or Hide Selection.
Apply a layer mask from another layer
❖ Do one of the following:
• To move the mask to another layer, drag the mask to the other layer.
• To duplicate the mask, Alt-drag (Windows) or Option-drag (Mac OS) the mask to other layer.
Edit a layer mask
1 Click the layer mask thumbnail in the Layers palette to make it active. A border appears around the mask
thumbnail.
2 Select any of the editing or painting tools.
Note: The foreground and background colors assume default grayscale values when the mask is active.
3 Do one of the following:
• To subtract from the mask and reveal the layer, paint the mask with white.
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