Figure 2.61. Correcting a pincushioned image.

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Figure 2.62. Fixing an image with barrel distortion.

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5. Note that the boundaries of your image will change as you apply correction. It's most noticeable when countering barrel distortion, because your fixed image will bow inwards, leaving blank areas outside its original boundaries. In the Edge area of the dialog box you can choose whether Photoshop leaves the area outside the new edges transparent, fills it with the background color, or extends the current background to fill up the area.

Your best choice is to select a large enough area for correction that you can crop out the distorted edges and not need to worry about what they look like at all. If your image has areas at the edges that have few important details (for example, sky), you can try extending the current background. Otherwise, use the Transparent or Background Color options and crop.

6. If you want to use the same correction on other images, choose Save Settings from the fly-out menu in the Settings area, and give your corrections a name (such as 4386 Zoom At 43mm).

Click OK when finished.

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