http://www.lightstalkers.org/posts/70-200-f-2-8 An entire Lightstalkers thread via RSS/XML. en-us as you know most photojournalist need to a 70-200 f/2,8 tele-zoom lens. I am Canon guy but I am using Sigma lenses (70-200 f/2,8). When I using my lenses to object at indoor area usually out of focus area. I used to tripod and everything. always a few blur with sigma 70-200. do you think lenses are damaged or this is Sigma ? thanks Thu, 16 Apr 2009 18:11:19 +0000 http://www.lightstalkers.org/posts/70-200-f-2-8 It is impossible to tell from your description what the problem is. Sigma makes good quality lenses, some indistingushable from similar Nikon or Canon equipment. You should not have a blur with every shot, though, if you are focusing it correctly and using a stable tripod. I suggest that you have a camera equipment professional look at the lens to see if something is out of adjustment. Wed, 31 Oct 2007 19:26:03 +0000 http://www.lightstalkers.org/posts/70-200-f-2-8#99322 you might be dealing with front-focus or back-focus, which means the focus is a bit off the point you set it to. if so, it can be fixed Wed, 31 Oct 2007 19:27:36 +0000 http://www.lightstalkers.org/posts/70-200-f-2-8#99323 We have 18 at the paper. Only the ones that have been banged up in the field or suffered damaged have focusing troubles. We send them home to sigma to be fixed and that's that. TS Wed, 31 Oct 2007 19:42:33 +0000 http://www.lightstalkers.org/posts/70-200-f-2-8#99325 Indeed, Sigma makes good quality lenses. Yours has a problem( I asume that your technique is good), best to send it in i think. Wed, 31 Oct 2007 21:49:52 +0000 http://www.lightstalkers.org/posts/70-200-f-2-8#99342 From my experience, Sigma, or at least Sigma's national agents are pretty quick as fixing lenses too. Wed, 31 Oct 2007 23:14:45 +0000 http://www.lightstalkers.org/posts/70-200-f-2-8#99356 well, i use the same exact lens, the Sigma 70-200 f2.8 for Canon. I have already worked with similar Nikon and Canon and i can´t notice any difference between them. I have heard this model is the best one made by Sigma compared to the Canon/Nikon brands...almost the same quality. I never had a problem about blur, unless i am working in very low speed without tripod or monopod. Also, the tripod must be good or the lens can change the position due it´s weight while doing the exposure... Thu, 01 Nov 2007 11:23:57 +0000 http://www.lightstalkers.org/posts/70-200-f-2-8#99404 Hi guy, I have a question about the Sigma 70 200 2.8: in low-light situation the AF is accurate? Some people tell me about problem of focusing with sigma in low-light. thank you very much, bye (: Thu, 01 Nov 2007 11:47:18 +0000 http://www.lightstalkers.org/posts/70-200-f-2-8#99405