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01-25-2009, 10:22 AM   #1
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Sigma 10-20 ex dc - HSM?

Hi folks,

I was wondering about buying one of these as they seem to be very highly regarded, but from looking at Sigma's website and from what I've heard from a couple of people, they don't make the HSM model with a Pentax mount - is that correct? That would be a right pain.


01-25-2009, 10:26 AM   #2
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Join Date: Sep 2008
Location: Finland
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The HSM is not really necessary with this lens. The DOF is already huge and the focus throw very short. It is snappy and will not hunt for eternity.
01-25-2009, 11:15 AM   #3
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Cheers Maffer. Bizarrely I still feel slightly hard done by that everyone else gets that feature but us!
01-25-2009, 12:20 PM   #4
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Nope, no HSM on the Sigma 10-20, just got mine

Only the HSM II lenses have real HSM on Pentax, AFAIK. That's mainly the 70-200 and the 50-150, I think, and also the soon-to-come 24-70.

The 10-20 is really a fun lens. You actually don't need AF at all, except for very close subjects (much less that 1 m). Just put it somewhere between 1m and infinity and it'll be fine. There is not even a mark on the focus ring between 1m and infinity, by the way.

You don't even have to look through the viewfinder at all, because there's everything in the frame anyway That thing is so W I D E


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