Macsupport Your Source for Macintosh Computer Classifieds, Product Reviews, Mac Help and Forums. � Blog Archive � iPhoto Keyboard Shortcuts:There's at least one missing. When you apply an effect in edit mode, if you hold down the control key (don't save image and don't click) you see how the original looks.
Go to next photo: Press the Right Arrow key
Go to previous photo: Press the Left Arrow key
Disable constrain setting when selecting an area: Press the Command key while dragging
Switch between portrait and landscape constrain setting when selecting an area: Press the Option key while dragging
I thought the Option key switch between portrait and landscape was broken in iPhoto 4 or 5, but it works fine in 5.02. Too bad I'd not been using it!