About layer masks

Layer masks are resolution-dependent bitmap images that are edited with the painting or selection tools. A layer mask controls the visibility of the layer to which it is added. You can edit a layer mask to add or subtract from the masked region without losing the layer pixels.

A layer mask is a grayscale image, so areas you paint in black are hidden, areas you paint in white are visible, and areas you paint in shades of gray appear in various levels of transparency. You can use the paint brush or the eraser to paint over the mask.

Add a layer mask to an image

  1. To add a layer mask, select the part of the image that you want to show and click the Add Layer Mask button in the Layers panel.

    Bemærk:

    A mask thumbnail linked with the layer thumbnail is added. This thumbnail represents the grayscale channel that is created when you add the layer mask.

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