I use Canon EOS 5D with Canon EF 15 mm f/2.8 Fisheye on Nodal Ninja 5 L. I have used the camera settings 53,5 for the lower rail and 79,5 for the upper rail (as suggested on the camera setting page). When I stitch the images in PTGui the stitch between the zenith image and the others are horrible. If i leave out the zenith image I get a good stitch.
Does anyone have suggestions on what I should change in order to get it right. I have tried at least ten times with the same result.