Don’t Cancel; Reset And Save Time
Most of Photoshop’s dialogs (but not all) will let you use this little tip, which can save you loads of time. When you’re making changes in a dialog (let’s use the Levels dialog as an example) and decide that you don’t like the changes you’ve made, one option is to click the Cancel button to close the dialog, leaving your image unchanged. Then you can reopen the dialog and try again. This is an incredible waste of valuable time, so instead, Photoshop lets you “reset” the dialog—putting the settings back to what they were when you first opened it. Just hold the Option key (PC: Alt key) and look at the Cancel button—it changes into the Reset button. Click it, and it resets the dialog automatically, as if you hadn’t made any changes at all. Big, big time saver.