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Don’t Use Crop to Fix Barrel Distrortion

 

Problem: You’re trying to fix barrel distortion that appears on a photo you’re editing, but using the Crop tool’s Perspective feature is a guessing game. You try the crop and it doesn’t look right; you have to undo it, and guess again. Solution: Don’t use the Crop tool’s Perspective feature (found in the Options Bar), even though it was specifically designed to address barrel distortion. Use the standard Free Transform command instead by pressing Command-T (PC: Control-T) and then pressing-and-holding the Command (PC: Control) key while you drag the corner handles to create your perspective. Doing this gives you a live onscreen preview as you work, so fixing the distortion takes just a few seconds—unlike Crop’s Perspective.

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Once You’re In CMYK Mode, Stay There

You’ve read some techniques in this chapter that require you to be in either RGB mode or Lab Color mode; however, if for any reason your image is already in CMYK mode, do not (I repeat, do not) convert to RGB or Lab mode for any reason. Once you’ve converted to CMYK mode, the data loss from the conversion has already occurred, and switching back to RGB mode won’t bring back those lost colors. What’s worse is, if you switch from CMYK to RGB (or Lab), when you convert back to CMYK mode, you’ll go through another CMYK conversion and damage your image even more. The moral of this story is-once you’re in CMYK mode, stay there.

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