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10-25-2010, 05:53 AM   #1
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Sigma 10-20mm or Tamron 10-24mm?

I was ready to get the Sigma based on the reviews on this forum and some other places, but....Tamron now has a $100 rebate on their lens. They were both about the same price, but now I wonder if the Sigma is really worth the extra $100. Is there anyone who has used both and can give me some advice on this? I will be using it mostly for family events and will try some landscape shots, along with what ever else comes along. I know each has it's own strengths, but is the IQ really that different?

Thanks for your anticipated help!

10-25-2010, 11:13 AM   #2
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I have been researching this myself. It's not clearcut from any review I have seen.

I had a Canon fit Sigma 10-20mm before moving to Pentax & I liked it. I tried out a different Tamron zoom a few years ago & thought it felt very cheap & the zoom wasn't very smooth.

There are two 10-20mm Sigma. On Pentax, one is HSM & the other uses the camera drive I think. I think the Tamron is HSM.
10-25-2010, 11:24 AM   #3

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QuoteOriginally posted by PMunks Quote
There are two 10-20mm Sigma. On Pentax, one is HSM & the other uses the camera drive I think.
The older f/4-5.6 version of the 10-20 is screw drive (at least for Pentax). The new f/3.5 constant aperture 10-20 is HSM.
10-25-2010, 03:32 PM   #4
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I just compared these two and chose the Tamron for the extra 4mm at the top end. For my uses I found little difference in IQ that wasn't masked by the variables in practical application and potential post-processing. See:


10-25-2010, 03:42 PM   #5

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I'd get the Sigma 12-24 or Pentax 12-24, personally.
10-25-2010, 06:09 PM   #6
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Thanks pacerr, that's the information I was looking for! I agree it is nice having the extra reach and it's a tad faster on the wide end too. The $100 rebate is just icing on the cake. I have the Tammy 28-75 and the 70-200 and I love the pictures I get with them! This lens with the others will almost cover the whole range from 10-200.

I'd love to get one of the 12-24's, but they are out of my price range unfortunately.

Thanks for the help!
10-25-2010, 06:13 PM   #7
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Thanks for this thread. It appears the Sigma DC goes for about $400 used, and I wasn't aware of the Tamron, especially with the rebate. The 12-24's are much more expensive, so probably going for the new Tamron.
10-25-2010, 06:28 PM   #8
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I have the Tamron and I am very happy with this one. Use it a lot on my last vacation


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