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iPhoto ’11: The Macintosh iLife Guide to using iPhoto with OS X Lion and iCloud by Jim Heid, Michael E. Cohen, Dennis R. Cohen

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Basic Photo Editing

Many photos can benefit from some tweaking. Maybe you’d like to crop out that huge telephone pole that distracts from your subject. Maybe the exposure is too light, too dark, or lacks contrast. Or maybe the camera’s flash gave your subject’s eyes the dreaded red-eye flaw.

iPhoto’s edit view can fix these problems and others. And it does so in a clever way that doesn’t replace your original image.

When you edit a photo, iPhoto keeps a list of the changes you made. If you reopen an edited image and make more changes, iPhoto applies your entire list of changes to the original version of the photo. It’s called non-destructive editing, and the result is fewer passes through the evil JPEG-compression meat grinder—and better photo ...

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