17.4 The Distorts Filters
The Distorts menu includes 18 loosely related filters. All 18 filters have a dialog, but the Engrave filter requires an Alpha channel and will be grayed out if none exists. We omit three filters because they are seldom useful: Blinds, Erase Every Other Row, and Video.
Figure 17-48. The Apply Lens dialog
Apply Lens
Apply Lens simulates a distorted view of the image through a spherical lens, as shown in Figure 17-47.
The dialog, shown in Figure 17-48, contains settings for the refraction index of the lens [1 to 100] and the handling of the image surroundings, which can be retained, made transparent (an Alpha channel is required), ...
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