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Senna4ever · 12-25-2009, 12:29 PM

If, for whatever reason you go the Sigma route, I would suggest not buying on-line. I would go to a store and try out their lenses, as Sigma's QC tolerances are so loose that the lenses vary greatly in image quality. They may back focus, front focus & even have a tilted plane of focus. Yes, the back focus & front focus problems can be compensated for in higher end bodies, but not every DSLR has this feature. Sigma & Tamron are notorious for this.

12-25-2009, 12:29 PM	#601
Senna4ever VLS Moderator Join Date: Feb 2003 Location: Vancouver Posts: 16,351 Thanked 2,591 Times in 832 Posts Failed 61 Times in 19 Posts	If, for whatever reason you go the Sigma route, I would suggest not buying on-line. I would go to a store and try out their lenses, as Sigma's QC tolerances are so loose that the lenses vary greatly in image quality. They may back focus, front focus & even have a tilted plane of focus. Yes, the back focus & front focus problems can be compensated for in higher end bodies, but not every DSLR has this feature. Sigma & Tamron are notorious for this. __________________ 2007 Volvo V50 Taken by ex: 2005 Toyota Prius. R.I.P. 1997 Lexus ES300. R.I.P. 1989 Acura Legend Coupe LS.