'!&§%!"§(% Vignetting :(
I really tried to remove it, but failed - I think it really affects this shot negatively.
Maybe I need to do my own profile?!
Manual correction in LR does not work (or I cannot make it work), LR profiles also fail.
I fear it might be because of using curves which distort the character of the vignetting too much?
Edit: Just played a bit more. It is the increased contrast that makes the vignetting visible. With normal contrast, the vignetting is barely visible. Hm. I suppose it would be too much to expect for these profiles to match my lens precisely enough for these postprocessing-high-contrast shots.