LensDoc Plug-In is a universal solution to lens distortions for photoshop.
Edit By BS Editor: Main Features
-Corrects the barreling and pin-cushioning image distortions by many zoom and wide-angle lenses
-Identify two lines that should be straight and place The Target points as guides. LensDoc does the rest
-As a bonus - correct rotation and perspective distortions as well
-Use generic lens corrections supplied or...
-Create and use your own lens correction curves

New Features
-16bit output for high resolution and print quality results.
-Make Rectangle can change a shot from a skewed perspective
to a head on view of the image. Great for shots that are Just a Little off all the way to getting a straight on view of anything and everything you could ever want to see! you can free download LensDoc Plug-In 3.1 now.