iOS 5 brought some basic editing features to the Photos app. Select any photo, tap Edit, and you have options to rotate, enhance, remove red eyes, and crop. These changes are also reversible, as you can tap back into that photo at a later time and choose “revert to original.” Fortunately, Aperture, Apple’s pro-sumer photo editor and manager for the Mac, also recognizes these adjustments and even lets you roll them back.