I've had a couple of sigma lenses on my 10D and had problems ranging from poor auto focus to fringing. Ironically they have worked fine on my 1N but with the move to digital this is very much a back up so I've been forced to buy L series glass for the beastie and they are well worth the money. Physically bomb proof and optically excellent. I bitched and moaned when my �300 sigma had to be replaced with a �700 canon but in retrospect its the right thing to do. I hate to sound like a Canon advert but you pays your money and takes your pic (pun intended).
Calvers
On Thursday, Feb 26, 2004, at 21:39 Europe/London, Dan Atkin wrote:
Hi
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I have a Sigma 20-40 f2.8 DG lens on a Canon� EOS 10D and the images produced show some�"purple fringing" on mainly white edging. I understand this is caused by chromatic aberrations in the camera lens and I read subsequently�the 10D produces fringing unless used with a�first class lens (such as Canon's own �1300+ 16-35mm).
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