Tokina 16-28, will a sharp one STAY sharp?
I'd love to have this lens for my Canon (in fact I had one, but returned it because of one soft corner), but I'm having doubts...
I can't believe that Tokina (and Sigma, and Tamron) really carelessly manufacture and ship them with sharpness issues. I rather believe that their internal construction isn't well designed, so the lenses get loose sooner or later.
If that's the case, also a sharp sample wouldn't be the ultimate solution.
Does anybody have reliable information to either support or object my thesis?