This might seem like a basic tip to some,
but I've been meeting more and more Photoshoppers from all walks of life who are so delighted to find out about this
tip that I thought I'd post it.Using the Measure Tool (oddly hidden under the Eyedropper Tool) in CS2 and CS, as well as 7 and I think 6 and earlier, you can draw a straight line and use it to orient your comp. For example: say you need to rotate an image ever so slightly so the side of a building is perfectly vertical or the edge of a table exactly horizontal. Simply draw a line with the Measure Tool along whatever object, edge or item you would like to straighten out with, then go up to Image > Rotate Canvas > Arbitrary. The Angle field will already be filled in with the value needed to straighten out the line you drew, in which case your canvas will rotate by that amount.
See? No more 'rotating and guessing.'
1. FIlter->Distort->Lens Correction also works well
Posted at 4:16PM on Apr 15th 2006 by ftown