What is a mask?

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What is a layer mask? provides you with in-depth training on Design. Taught by Jan Kabili as part of the Photoshop CS4: Layer Masks in Depth - Read more

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What is mask? - Definition from WhatIs.com

In graphic design, a mask is a tool that allows you to protect a specific area of an image from modification. Conversely, an inverse mask allows anything outside the ...

What Is a Photoshop Mask? | eHow

The masking tool in Photoshop is one that gives you the ability to control transparency in a much more specific way than by using the Opacity slider located in the ...