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09-04-2012, 05:51 PM   #1
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Sigma 17-50 HSM?

I know there is a big review covering the DA*, Sigma and Tamron normal zooms but in the review it never mentions HSM on the Sigma. The Sigma comes out on top and HSM sounds nice but I also know that small tweaks like HSM or OS can greatly effect IQ and overall performance.

Please let me know if you know what's going on and whether there have been any changes in the versions since the review or if in fact that version was HSM.

Also feel free to throw in your $.01 about any of the three lenses. Thanks in advance!

09-04-2012, 05:57 PM   #2
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I heard that the HSM on the 17-50 was fantastic - sorta like the HSM on their 70-200.

Although I've also heard that their 17-50 was similar to the Tamron 17-50 - usually needs focus adjustment.
09-04-2012, 05:58 PM - 1 Like   #3
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The latest (HSM) version was the one reviewed.

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09-04-2012, 06:04 PM   #4
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QuoteOriginally posted by Adam Quote
The latest (HSM) version was the one reviewed.
Thanks for the response Adam! Now I just have to wait and see what happens with the DA* pricing... The DA* 50-135 or the Sigma 17-50 will be my next lens.... Can't wait.

09-04-2012, 07:10 PM   #5
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My Tamron 17-50/2.8 has replaced my primes for tripod-mounted landscape photography. It's quite a lens.
09-04-2012, 11:09 PM   #6
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QuoteOriginally posted by civiletti Quote
My Tamron 17-50/2.8 has replaced my primes for tripod-mounted landscape photography. It's quite a lens.
This is what i wanted to read...I will get my 17-50 as soon as possible
09-05-2012, 06:53 AM   #7
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QuoteOriginally posted by civiletti Quote
My Tamron 17-50/2.8 has replaced my primes for tripod-mounted landscape photography. It's quite a lens.
Has the AF been fast enough for you? Is it excessively loud?
09-05-2012, 08:09 AM   #8
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I don't want to take this thread off topic, but I do have a comment about the Sigma 17-50 HSM and also have a related question.

I purchased the latest version of this lens last week brand new. Regarding the HSM focus - it is super smooth and quiet and don't see how it could be much faster than it is. The focus throw is very short on this lens which also makes it quite fast being there isn't much travel. Build quality is very good - feels good in your hands.

Now on to focus issues. The copy I got had some pretty bad back focus. I was kind of upset about this - feel that when I buy a lens for $600 it should be right on out of the box. I promptly returned it.

Now weighing my options, I feel that maybe I should have given it a chance and see if I could bring it in with an AF fine adjustment. From what I have read this seems to be fairly common with the new Sigma lenses.

I had recently sent a used Sigma lens in to Sigma where they calibrated the lens to my body with very good results. But again, I don't feel I should have to go through all that with a brand new lens.

I don't really want the Tamron lens, and am shying away from a used DA* 16-50. Should I give the Sigma another try?

09-05-2012, 08:18 AM   #9
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yes. It is quite easy to got a sigma lens that does not focus well with your body.
The odds is not low.
my sigma 17-50 does not focus very well at infinity.
but when it focus well, it is a very good lens. sharp even at f2.8. this is way better than pentax 16-50.
but my pentax 16-50 focus very well. so....
besides pentax 16-50 focus speed is on par with sigma 17-50. I do not feel sigma 17-50 is faster in the filed.
if you buy new sigma lens. I suggest you buy locally that you can test it out before purchase. make sure you got a good copy.
or you can send your body and lens to sigma let them calibrate. but really why do we have to go through this if we purchase it new...??

Last edited by liukaitc; 09-05-2012 at 08:23 AM.
09-05-2012, 12:13 PM   #10
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QuoteOriginally posted by JeremytheIndian Quote
Has the AF been fast enough for you? Is it excessively loud?

I don't always use autofocus, but when I do, the Tamron works fine for me. It is not silent, but I cannot remember being bothered by the sound.
09-05-2012, 12:25 PM   #11
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QuoteOriginally posted by 123jippo Quote
This is what i wanted to read...I will get my 17-50 as soon as possible
Here's one at 24mm

09-05-2012, 07:36 PM   #12
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My Tamron 17-50/2.8 needed a -5 AF fine adjustment on my K-r. So it's not immune to focus issues either. But with that, it's pretty nice. It's usable if slightly soft at f/2.8 and improves greatly by f/3.5. build quality is alright, I'd say about par with the nicer Pentax FA or DA plastic barrel/metal mount lenses. AF is reasonably quick, doesn't hunt much, and is reasonably quiet for a screw-drive lens. It's much quieter than my F 135/2.8 and especially my F 70-210/4-5.6.

From what I've seen of the Sigma, it should have a nicer build, the HSM focus of course, and a bit better corner sharpness at wider apertures. Whether that's worth the extra cost to you, should help figure out which one to choose.
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