Using a Lighting Effects texture

The Texture Channel in the Lighting Effects dialog box lets you use a grayscale texture such as paper or water to control how light reflects off an image. You can use any channel in your image (including a channel copied from a different image) as a texture, or you can create your own texture. For an embossed text effect, use a channel with white text on a black background, or vice versa.

To use the Texture Channel in the Lighting Effects dialog box:

1. If necessary, create an alpha channel in your image and add texture. To use a texture from another image, copy and paste the image into a new channel. (See Creating alpha channels (Photoshop).)
2. In the Lighting Effects dialog box, choose a channel from the Texture Channel menu: the image's Red, Green, or Blue channel or any channel added to the image.
3. Select White is High to raise the white parts of the channel from the surface. Deselect this option to raise the dark parts.
4. Drag the Height slider to vary the texture from Flat (0) to Mountainous (100).