« on: March 30, 2012, 01:17:59 PM »
I have always been Canon believer and avoided 3rd-party manufacturers lenses like a plague.
For what it's worth, Bryan at the-digital-picture.com always adds the caveat about focusing issues to his Sigma lens reviews. I have had zero problems with my Sigma 85mm. The Sigma 50mm f/1.4 had some focusing issues for me (though it is a very good lens). I point this out in case someone with experience with the 50mm but not the 85mm was to infer similar AF performance.