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02-27-2010, 08:06 AM   #1
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HSM on sigma lenses?

Hi all, I think I know the answer already, but some lens reviews are confusing me. If you look at the reviews for the Sigma 150-500 on the forum, people say how great the HSM is and they wouldn't go back, but my understanding is that Sigma does not have HSM on the pentax mounts? Or do certain lenses have it?

PentaxForums.com Third-Party Lens Review Database - 150-500mm f/5-6.3 DG HSM APO

I'm interested as I want to pick up a long Sigma lens in the near future and HSM would be better as I photograph birds frequently.

02-27-2010, 08:11 AM   #2
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Certain Sigma lenses do have HSM for Pentax and the 150-500 is one of them.
02-27-2010, 08:14 AM   #3
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IS it only older versions then? If you look on the current sigma listing for the 150-500 150-500mm F5-6.3 APO DG OS HSM - Telephoto Zoom Lenses - SigmaPhoto.com it says Pentax mount does not have HSM? Do they have it on certain discontinued models, or is the Sigma site incorrect?
02-27-2010, 08:30 AM   #4
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I don't know why is says that....maybe because some older bodies don't support it. But all new Sigmas had HSM for Pentax. You can always call them.

02-27-2010, 09:44 AM   #5
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The 150-500mm in Pentax mount has HSM.
02-27-2010, 10:18 AM   #6
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HSM for Pentax
http://www.sigmaphoto.com/sigma-lens-finder-results
02-27-2010, 01:11 PM   #7
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Okay, I see that the 150-500 has hsm. Now the question is, is the bigma (50-500) better than the 150-500? Is the HSM that much better than the screwdrive?

Anyone with an HSM lens want to comment?

Thanks.
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