> Tamron SP AF17-35MM F/2.8-4 Di My husband wanted to get this lens for his Digital Rebel, and he did a lot of research on lenses in this range. It got great reviews from Canon users on the DPreview boards. He ended up trying multiple copies of both the Tamron and Sigma's offering in the same range. He says that with the Tamron, the problem was edge sharpness, and with the Sigma, he always had focusing problems. Of course, the Sigma could have had focusing problems because Canon puts the focusing mechanism on the lens and not the body like Pentax does.
This all happened in December 2004. Nate thinks, from looking at reviews, that Tamron might have put out a bad batch of lenses early on. He ended up springing for the Canon 17-40mm, and he has no regrets. Apparently there are still people on the DPreview boards who swear by the Tamron. I understand your dilemma of wanting to put the lens on a film body. I only buy full-frame lenses, partly for that reason, but I think I'm in the minority on this list. Hope this helps, Amita
