
Originally Posted by
Robert Amoruso
It also appears that you have lens distortion as the horizon is curved. This can be corrected in PSCS under Filter>Distort>Lens Correction using the Remove Distortion slider. You also may need to straighten the horizon after by using the Ruler Tool and drawing a line along the horizon parallel to it. Then Image>Rotate Canvas>Arbitrary in the menu, the Rotate Canvas dialog pops up and the angle that needs to be corrected is show. Just click on OK. Then recrop and your all fixed.
Thanks for posting.