Fixing curve horizon (lens correction?

[AfroKen]

Hey, I'm all about questions today.

In Photoshop CS, what's the best way to fix a curved horizon? I shot some stuff in Death Valley with an 18mm, and I have a curved horizon that I'd like to fix in some of the photos. Note that I am not asking how to make a horizon level, which I do know how to do. Thanks.

This tutorial states how to do it in CS3, but I do not have this in CS. But nonetheless, 'cuz I'm a supremely nice guy, I'm gonna post it here so others can learn. It's basically Filter > Distort > Lens Correction. Here's the video:

 

[KmH]

You can try the crop tool in "Perspective" mode too. Turn on the grid display to help see what you're doing and move the corner handles to straighten things up.

 

[AfroKen]

Thanks. Couldn't find that one. But I think I figured it out. Filter > Spherize. Then use something like -10 or thereabouts in "Normal Mode".