If you want to spend the cash, there is always Lensalign ...


http://www.lensalign.com/how-lensalign-works.html

http://videos.lensalign.com/LensAlign/LensAlign-Video-User-Guide/6830310_fnpyr

I have been debating on this one since I still haven't done anything with any of my lenses. Well, at leastthis gives you an idea of setup and what it entails.

Denise