“Stepping Back with the History Palette.”)But, Undo does work well for the quick one-step fix. Choose Edit>Undo or press Ctrl/z +Z to do the undo.Revert is another simple command, but it can pack a wallop. When you use revert by choosing File> Revert or pressing F12, Photoshop restores the image file to its last saved version. Depending upon how much you save a file as you work on it, this command can take you back one step or twenty steps. Unfortunately, unless you keep mental track of when you last saved the image, you might not know what state the image will be in when you use Revert.
Remember | Using the History palette gives you an advantage over using Revert. With the History palette, you can revert to the original image regardless of whether you saved along the way. Revert reloads the last saved version, which may include some undesireable changes. |
If you use Revert and then realize it was a mistake, don’t worry! You can use Undo to remove the Revert or use the History palette to move back because Revert is recorded in the History palette.