Interesting Edges
To create a rippled-edge effect on your mask, try this out: Open the photograph you want to apply the effect to, and make a selection with the Marquee tool. Make sure your selection is a little inside the edge of the photograph (so there's room for our effect). To get the photograph to show up only where the rectangular selection is, click the Layer Mask icon at the bottom of the Layers palette.
Now you can distort the edge of the photo by using any filter you'd like (Figures 15.62 to 15.64). For now, just use one of the filters under the Filter > Distort menu, such as Ripple, Twirl, or Polar Coordinates.
Figure 15.62. Result of adding a Layer Mask to limit where the photo shows up. (©2005 Stockbyte, www.stockbyte.com)
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