Photoshop: Perspective Correction In Photoshop - Repairing Keystoning

Tired of the buildings in your photos looking like they're leaning backwards? That's a common perspective problem known as keystoning, but Photoshop's powerful Lens Correction filter, first introduced in Photoshop CS2, makes it easy to fix! We can even take care of a few other potential image problems along the way, all with the same filter!