Help with Fish Eye Panoramic Editing

[FourWheelers]

Hello,
I am flying a stock PV2 Vision with the FC200 camera. I have taken several photos that I am using Photoshop CS6 to manipulate into a panoramic photo.

After fixing the distortion and horizon I use the software to photomerge into one picture. My issue is I either have a curved horizon or u-shaped front image. Sorry for not uploading the picture, I seem to have trouble resizing the photo.

Any ideas on what software works well with the FC200 to give clear and straight depth of field when used for panoramic photos?

 

[jerrymac12000]

If you are using windows, you can download a free copy of "Gimp" from the Internet. There is a feature in it that will straighten out the horizon and fix alot of the fisheye problems.