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09-07-2011, 06:31 PM   #16
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QuoteOriginally posted by raider Quote
I am only asking if there are any pentax users using the latest sigma 105 HSM OS lens. It is available in pentax mount I am sure. The HSM and OS features intrigues me. I am wondering if it is a lot better than my current 105 sigma.
It is not available in K mount so you won't find anybody with info for Pentax. Sigma USA claims no plans to make it in Pentax mount.

QuoteOriginally posted by Adam Quote
The new 150mm, however, will be available for Pentax. It's a lens I'm particularly looking forward to:
Sigma initially announced that all the new splashproof models would be available in K mount; however, later revised the website removing Pentax from the listed mounts. Sigma USA claims that none of the new splashproof models are planned in Pentax mount, B&H says they have not heard this information. So make your own guess what Sigma will do, I wouldn't bet on it though.

09-07-2011, 08:46 PM   #17
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Thanks for the comments. I guess I will just have to wait and see if the k-mount version will be offered by Sigma. For now, we will stick to the non HSM version.
10-29-2011, 11:29 AM   #18
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Adorama has it as available, with no warning that it may be out of stock. 258109 Sigma 105mm f/2.8 EX DG OS HSM Macro Lens for Pentax DSLR Cameras Has anyone tried to order?

My one concern is that it looks like there is no longer an aperture ring, which means older film cameras are out of luck.
10-30-2011, 08:43 AM   #19
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Coming in at such a high price compared to the 150mm 2.8 macro. $130 more and you would have the 150. I just wish Sigma would get around to making it in K mount.

10-30-2011, 11:53 AM   #20
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QuoteOriginally posted by TOUGEFC Quote
Locally the difference in price from old to new model is $410!

I wonder how the "splash proof" holds up against Pentax WR.....
Also says new model has rounded aperture blades, did the old model have rounded blades too?
Would be interesting to compare the Sigma 105 OS HSM to SMC100WR. At the moment though the Pentax offering is cheaper and smaller, OS (SR) is in the body so I don't see Sigma holding a lot of trump cards.

The old 105 EX DG didn't have rounded blades, just straight edgeded 8 bladed iris.
10-30-2011, 11:54 AM   #21
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QuoteOriginally posted by TOUGEFC Quote
Locally the difference in price from old to new model is $410!

I wonder how the "splash proof" holds up against Pentax WR.....
Also says new model has rounded aperture blades, did the old model have rounded blades too?
Would be interesting to compare the Sigma 105 OS HSM to SMC100WR. At the moment though the Pentax offering is cheaper and smaller, OS (SR) is in the body so I don't see Sigma holding a lot of trump cards.

The old 105 EX DG didn't have rounded blades, just straight edgeded 8 bladed iris. And was painfully slow in AF, I mean not really but FA100/2.8 beats it any day...
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