Undo My Changes?

You can use the regular ol’ Undo keyboard shortcut of Command-Z (PC: Ctrl-Z) to undo just your last change, but Camera Raw lets you undo any change you’ve made because it keeps track of all the changes you’ve made to your image in the background. To undo each step, one at a time, just press Command-Option-Z (PC: Ctrl-Alt-Z), and it undoes your last step. Press it again, and it undoes the previous step to that, and so on.