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Welcome to the final chapter in this series. It's been a long time coming, but now here it is. In this final chapter we will take a look at two highly-specialized functions in Photoshop that employ independent channels to create 3D quality effects. The first, the Displace Filter uses a single or double channel fire called a Displacement Map to move pixels, effectively taking one image and wrapping it along or around another. The second, Lighting Effects lets you light the edges between the black-and-whites in an Alpha channel to create a custom 3D embossing effect.
In other words, the first command provides the 3D distortion; the second provides the 3D lighting. Both employ channels to make their magic work, and although neither feature has been updated since it was first introduced years and years ago. Each produces exceptional results. Just as you'll experience firsthand in the following exercises.
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