Today I bought a Samyang 8mm fisheye lens to use with my Canon 60D and panoramic head. When stitching the pictures (6+one up and one down) I get a strange result. It looks like a line around each photo. Also, the EXIF data says the focal length is 80,1mm (50mm, cropped). This is the (weird) result:
I tried some change in the settings (like choosing the fisheye function) but that made it only worse. The software worked fine with my Canon 10-22 lens.