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Old Feb 15, 2005, 4:31 AM   #1
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I have a Canon 10d and I am looking to get a decent wide angle lens. Right now all I have is a 28-90 which doesnt really cover the wide range with the crop factor. My question is about the pro's and con's of the Tamron 17-35 vs. the Sigma 17-35. I think the HSM on the Sigma for faster and quieter focusing, but can it really be much faster? Both cost about the same so the only thing I take off points for the Sigma would be the 82mm filter size. I will be shooting mainly Architecture and Landscapes, so anyone who has experience with either of these two lenses, I would be glad to know what you think.

Thanks alot.
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Old Feb 15, 2005, 6:32 AM   #2
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I have the Sigma 17-35 EX, the HSM is not only faster and quieter, but it also offers full time AF manual overide with this feature so there's no need to slide the M/AF switch first - The new 'DG' version is filtered for 77mm and not 82mm, and check its MTF if you want (only to 15 for the 10D): http://www.sigmaphoto.com/lenses/len...58&navigator=1

The faster f/2.8 also helps @ sunrise/sunset :idea:

BTW if you don't mind not having f/2.8 or HSM you can gain an extra 2mm with the 15-30 EX. On the 10D (or any cropped dSLR) you can actually mount a front filter in the threaded opening of the included lens cap...
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Old Feb 16, 2005, 12:02 AM   #3
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Before christmas, I was having the same problem of deciding between the Tamron and Sigma. My wonderful xmass fairy (gf) got me the Sigma 17-35, and oh man...

The build quality, AF speed, sharpness and contrast are just sweet. Bokeh isn't bad either. I highly recommend this lens. IMHO a much better buy than the Tamron, and at 60% cost of the 17-40 Canon, a better deal there too!


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