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Straighten a pano with reflections in Photoshop

Example image


You can see this beautiful panorama is rotated slightly counter clockwise. That's a simple problem and it can easily be corrected in Photoshop. Even easier with the tip bellow.

The trick


The reflected image and the corresponding object are on the same vertical line when it reflects on a level reflective surface, like a lake, a pond of water, a fountain, a glass floor... The trick (from Max Lyons) is to use the Photoshop "measure tool" (hidden behind the Eyedropper toll in the tool palette) and then Image - Rotate canvas - arbitrary (which is not arbitrary at all but derives the used angle value from the Measure tool).


Al, for the example image; GURL for sharing this tip; Max Lyons for inventing(?) it.