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Chapter 15. Production Bundle Techniques > Using the Displacement Map Effect

Using the Displacement Map Effect

In Chapter 10, you learned how compound effects alter a layer by referring to another layer, which serves as a map for the effect. The Displacement Map effect shifts the pixels of the selected layer based on the pixel values of an effect source layer, appropriately called the displacement map.

Unlike the effect source of many compound effects, the displacement map layer can be either a grayscale or color image. The color values used to displace pixels in the selected layer depend on the options you choose. As a rule, however, a pixel with a higher or lower value displaces pixels by the maximum amount, while a mid-range value doesn't displace pixels at all. Depending on the nature of the displacement map and the effect options you choose, the effect can make an image appear as though it's refracting through a glass prism or smearing like paint (Figure 15.45, Figure 15.46 and Figure 15.47).


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