Originally posted by pingflood The only issue is that Sigma has horrible quality control on their gear and getting one that focuses properly is like playing russian roulette. Their lenses are optically great (especially the 50 and 85) but it doesn't matter how good a lens is if it can't focus properly.
Just curious, is your opinion based on personal experience, or from what you've read/heard from others on the interweb? I've now owned quite a number of Sigma EX lenses and all have been great for me.
The only one I've ever returned was a Sigma 50 in Pentax mount. I switched to Nikon and the lens was still within my return window, so I swapped it for the same lens in Nikon.
c[_]