Hi all, just after some advice.. I am looking to buy either a Tamron 28-75mm f/2.8 XR Di LD or a Tamron 17-50mm f/2.8 XR Di-II LD for my Nikon D90.
After looking at various reviews I see a familiar theme pop up..." I bought a bad one, it has very soft edges at low aperture".
The end result seams to be that the lens is exchanged.
After some more research I also find that a lens has a "sweet spot" around F8/F11, would this not mean then that soft edges at low aperture are normal?
Tamron also do a VC version of the 17-50, is there a big difference?