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10-06-2011, 04:56 PM   #1
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tamron 17-50 vs sigma 17-50???

i have the tamron 17-50 and the sigma 50-150 and i find that the sigma is much sharper and faster to focus the the tamron. i was curiuos to see if i should expect the same results when using the sigma 17-50. the tamron has been great but it seems to hunt, is louder, and not as sharp as the sigma 50-150 when shooting wide open.

thank you in advance

jorge

10-06-2011, 05:13 PM   #2
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A comparative review of these two lenses is about to go up on our homepage. I would stay tuned this weekend!

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10-06-2011, 05:25 PM   #3
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QuoteOriginally posted by Adam Quote
A comparative review of these two lenses is about to go up on our homepage. I would stay tuned this weekend!
Oh great... I just bought the Tamron 17-50mm. Can you make sure the Tamron wins so I can sleep better?
10-06-2011, 05:42 PM   #4
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The Sigma beat the Tamron by 0.3 points, actually (but both scored higher than the Pentax 16-50). Stay tuned for the details on that!


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10-06-2011, 05:57 PM   #5
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Wow, looking forward to this review! I've been strongly considering the Tammy 17-50. If it was that close, I can't see paying the extra $200 or so for the Sigma.
10-06-2011, 09:44 PM   #6
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so cheep so good like tamron no one can be, but silent focus is something usually underrated so I find my self thinking of replacing tamron with sigma or pentax just because focus noise
10-07-2011, 05:35 PM   #7
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The review is now up:

Comparative Review: Fast Normal Zoom Shootout - Introduction

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10-07-2011, 06:19 PM   #8
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That's an excellent review, and will help lots of people considering this popular zoom range.

It would have been interesting to see how the 16-45 DA compared, although it's obviously not in the same category.

Paul

10-07-2011, 06:32 PM   #9
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test results

Thanks for the useful comparison [though a mid-focal length comparison would have been nice]. I differ on the interpretation of the "sharpness" samples, though. The Sigma is better in the corner at 50mm, but the Tamron looks better in the corner at 17mm. The Tamron is quite a bit better near the center at both focal lengths. Which lens is sharper? Without comparison at 24mm-35mm, I'd give the nod to the Tamron.
10-07-2011, 08:12 PM   #10
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My vote goes to the Sigma. Used it a couple of times and I was very impressed. The only reason to buy the Pentax is if you just have to have weather sealing.
10-08-2011, 05:14 AM   #11
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I would have liked to see the kit lens (a good copy) against the three. With a hood.

Seb.
10-08-2011, 09:49 PM   #12
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The official thread for discussing the review is here: https://www.pentaxforums.com/forums/pentax-dslr-discussion/161600-sigma-17-50...a-16-50mm.html.
10-09-2011, 02:53 AM   #13
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tamron with weather sealing would be nice. But I have noticed some out of focus photos with it.
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