I think you might have something else going on with your Tok 10-17 -- it just doesn't look sharp in any part of the image. If it was just a Fine Tuning issue, it would be back or front focusing, but it just looks very "soft" overall.
Yes tnks, I noticed that too. Could it also be a camera problem..like a wrong AF setting, didnt try the fine tuning yet.
Today we had sunshine! So I tried some more tests, with Tok and Pana set at 1/30 F8 ISO400, 20 cm distance. Tok now at 10 mm. Results looked better now for Tok/Nikon. So perhaps AF under low ambient light could have produced bad results for the Tok/Nikon combo in the earlier shots. But taken together, and admitting that this was probably not the best test of the quality of these lenses, I would tentatively call the Pana fisheye the winner (with a small margin).