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Deconstructing the Effect MenuThe Effect menu is basically split into four main sections. At the very top are two settings: Apply Last Effect and Last Effect. The former allows you to duplicate the last effect you applied, including all of its settings; the latter opens the dialog for the last effect that you applied so that you can choose Featured Match-Up: Illustrator Effects vs. Photoshop Effects," later in this chapter). Is It Vector, or Is It Raster?You already know that a Live Effect is simply an appearance that is added to an object, meaning that the underlying vector object exists in your document in its original state. As you change the underlying object, the appearance updates to reflect that change. If you want to lock in an appearance, you need to choose Object > Expand Appearance to alter the actual vector paths, at which point the effect is no longer live, and can't be edited.Some effects, such as Drop Shadow, are raster-based. Even though this effect appears grouped under the Illustrator Effects section, when the appearance is expanded, the drop shadow becomes a raster image (Figure 7.2 ). The same applies when you print a file, because all effects are expanded when they are sent to the printer (your file remains in an unexpanded state however, allowing further editing). Figure 7.2. Many of the Stylize effects, including Drop Shadow, produce raster-based results, even though they are listed within the Illustrator Effects section of the Effect menu. |
Massaging Pixels in Illustrator
If it is true that some effects in Illustrator produce a rasterized result, who determines the resolution of those rasters? When you work in Photoshop, you can't even create a new file without first defining its resolution. But with Illustrator, which is vector-based, you don't think much about resolution. So the question is, what determines the resolution of these raster-based effects? To find the answer, choose Effect > Document Raster Effects Settings.Chapter 12, Saving and Exporting Files , for information.The Document Raster Effects Settings dialog is where you can specify the resolution for raster-based effects. In fact, the dialog offers all the necessary settings for determining how raster-based effects eventually print (Figure 7.3 ).
Figure 7.3. When using Live Effects, choosing the right settings in the Document Raster Effects Settings dialog is key to achieving the best results from your files.
Figure 7.4. In this example, the artwork on the left used the White Background setting, whereas the artwork on the right used the Transparent Background setting.
Figure 7.5. On the left is a circle with a 60-pixel Gaussian Blur applied. With the default Add .5 in Around Object setting, the blur is visibly clipped. On the right, that same blur appears correctly with the Add Space Around Object setting increased to 1.5 inches.
