Moving about images in iPhoto 5 and prior

ExtraBITS

"In versions of iPhoto before 5, when you zoomed in on a photo in edit mode, you could hold down the Command key to drag the image around; it was a lot easier than using the scrollbars to move around within the image. In iPhoto 5, though, Apple made Command-clicking while in edit mode set a white point for the image (it works only if you click on an appropriately white part of the image), and as far as I knew, eliminated entirely the Command-dragging approach to moving around while zoomed in. Kudos to Markus Silpala, then for discovering that you can in fact still drag a photo in edit mode to move around - the trick in iPhoto 5 is that you must hold down the Spacebar while doing so."