Thanks a lot for so much informations!
I gave my bad copy lens back and purchased now a used one, that was really cheap and the owner promised me good quality- as this lens could be....
What make me very disappoited and very angry is the way that traditional high Quality Producer like Nikon treat us- I mean professional users.
This lens as every shift-tilt lenses is a professional line lens, that must have high standart of end control. As we can see Nikons end control is bad or not existent. Maybe it is the foult of us- of the users, that we dont protest in official way and complain about it. I think in this way Nikon could loose his reputation and this would be a good pressure to the company.
I have read much information about experiance with this lens, so much people complain or use this lens only , becouse there is no alternative, but they are not really happy with it. It seems not to be a problem with this lens itself but a problem of end control, of very exactly monting of the lenselements One example: one guy from Gemany complain about the bad quality, send the lens to nikon service and get the stupid standart answer that the lens quality is OK and the mistakes are normal. He made really presure on Nikon and at the end he could send the lens for second time. Tis time the lens was serviced in the right way, that means the glasses were centered new. The guy get a perfect lens, as it should be at the beginning! So you see-the problem is the Nikon service. I made one time my experience with Nikon service with my scanner some years ago and i thought it was an exeption....
Anyway I have some years experiences with shift lenses, with all Canon TS-E, old and new, Schneider PC 28 mm and 120 shift lenses from Pentax, Mamiya, Schneider ( not to mention large format lenses, but this is an other story). I know how they should perform, I never expect the Nikon 24 mm as good as Canon 24 mm II, but the copy that I had was years after the the poor Canon 24 mm Version 1. Not to compere with the Schneider PC 28 mm- made in 80/90 ties- the schneider is not perfect, but compered with Nikon a dream.
I will give Nikon last chance with the lens that I purchased now, if the lens is also so poor I will contact Nikon officially and make they reaction or answer public.