I bought the Sigma 100-300 f/4 HSM a few months ago used (good price). On a trip last month, the autofocus stopped working. It still works fine in manual focus. Has anyone else had this problem, with this lens specifically or with Sigma lenses in general?
Annoyingly, I contacted one of their official service centers (CRIS Camera Repair) and they said they cannot repair it because it is no longer made and parts are no longer available. I mean, they were not even willing to let me send it in just to have them look at it. A local camera shop in my city does some repair work and they are looking at it now. I love this lens and would possibly replace it with the same thing if this is just a fluke. But if Sigmas are notorious for the autofocus failing, I will just have to get a 70-200 2.8 and use it with a 1.4X converter.