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Chapter 20. Working with Placed Graphics... > Working with Effects on Placed Image...

Working with Effects on Placed Images

Effects (on the Effects menu) are similar to filters in visual result, with the difference being that effects are live. They do not create new objects or paths, are not necessarily permanent, and automatically update to reflect changes in the source object. Effects create appearance attribute entries in the Appearance palette and are therefore able to be saved and reapplied in graphic styles. Additionally, they may be removed simply by deleting their attribute entries in the Appearance palette, leaving the source object intact. Effects may also be nested, one applied atop another, with each one reacting to the others.

Moreover, you don't have to apply effects to entire objects—you can (and often will) apply effects to individual appearance attributes. For example, in an object with three different fills, one fill may have the Offset effect and Inner Glow applied, the second fill may have the Roughen attribute, and the third fill may be distorted using Free Transform and the Gaussian Blur effect applied solely to the distorted fill. Filters, on the other hand, may be applied only to entire objects, not to individual appearance attributes.


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