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07-14-2010, 07:46 PM   #1
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Sigma 17-50mm F2.8 EX DC OS HSM Lens Now Available

According to this news release, the Sigma 17-50mm F2.8 EX DC OS HSM lens is now available in Canon mount, with Pentax to follow in the coming weeks.

They list the MSRP as $980.

07-14-2010, 09:36 PM   #2
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Sigma is doing what Pentax can't - relatively cheap, sharp, EXcelent lens with ring HSM and optical stabilizer.

LOL and shame
07-14-2010, 10:13 PM   #3
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QuoteOriginally posted by Zebooka Quote
Sigma is doing what Pentax can't - relatively cheap, sharp, EXcelent lens with ring HSM and optical stabilizer.

LOL and shame

Does come down to economies of scale to though.

Sigma can mass produce and make an almost identical lens for Nikon, Canon, Pentax Sony.

Pentax can only make for Pentax and can't mass produce in the way Canon or Nikon does.
07-14-2010, 10:44 PM   #4
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The DA*16-50 is now below $750 at Adorama and B&H, so Sigma would need some heavy discounting to stay in the game.

There's some differentiation between the two- some people don't like pentax SDM; others don't need the Pentax weatherproofing; I for one would appreciate the Sigma's smaller size.

I think they've pitched the price to be competitive with the professional lines of the big two manufacturers. All things considered, I'd go with the Pentax glass at the price Sigma is proposing.

07-15-2010, 01:25 AM   #5
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Here in Aus the sigma 17-50/2.8 OS HSM is $819 and the pentax 16-50/2.8 is Aus$1400!
07-15-2010, 03:35 AM   #6
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QuoteOriginally posted by Zebooka Quote
Sigma is doing what Pentax can't - relatively cheap, sharp, EXcelent lens with ring HSM and optical stabilizer.

LOL and shame
Cheap? Hmmm..... at street price well over US$600, this is not a "cheap" lens. Fills the gap between the Tamron 17-50 and the DA*16-50.
07-15-2010, 04:54 AM   #7
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QuoteOriginally posted by Aristophanes Quote
Cheap? Hmmm..... at street price well over US$600, this is not a "cheap" lens. Fills the gap between the Tamron 17-50 and the DA*16-50.
In Russia DA* 16-50/2.8 costs $1500
I bought my Sigma 18-50 at price three times lower that DA* price.

Also main accent in my sentence was not on price but - HSM and OS
07-15-2010, 05:02 AM   #8
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QuoteOriginally posted by Zebooka Quote
In Russia DA* 16-50/2.8 costs $1500
I bought my Sigma 18-50 at price three times lower that DA* price.

Also main accent in my sentence was not on price but - HSM and OS
OS would be not very clever, expensive and stupid from a marketing PoV since Pentax cameras are stabilized already.
Not absolutely mandatory on a wide/normal lens btw (though it is always good to have I agree).

07-15-2010, 05:58 AM   #9
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i found the in-lens OS to work much slower than the in-body one, at least for the K7. Thus I agree that the in-lens is good mainly for tele, since it also stabilizes the VF image whilst the in body is more usefull in mid range/portraits.
07-15-2010, 06:51 AM   #10
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I doubt it will cost anywhere near that at retail. The new 17-70/2.8-4 is listed at $680 MSRP and retails for $449. So, funky backwards math puts the retail price closer to $649.

But for Sigma to call it "ultra compact" and have it only 1/4" shorter than the 16-50 and the same weight is going a little far. Oh wait, for a Sigma, that IS ultra compact!
07-15-2010, 06:51 AM   #11
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Pentax obviously could make lenses with Canon and Nikon mounts if they wanted to do that.

Pentax made lenses with Leica screw thread mounts, sold them instantly, and have a great reputation among Leica users.

I think their business decisions boil down to two markets: undemanding/low quality and demanding/high quality. Minolta did that with their standard lenses and their "Celtic" junque.
07-15-2010, 06:58 AM   #12
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QuoteOriginally posted by Zebooka Quote
Sigma is doing what Pentax can't - relatively cheap, sharp, EXcelent lens with ring HSM and optical stabilizer.

LOL and shame
Estimated street price over 600USD is not a cheap price for the lens. Also according to review on photozone.de(Canon Mount)Sigma AF 17-50mm f/2.8 HSM DC EX OS - Review / Test Report this lens is an excellent performer. Only if this lens had a WR seals then it would make a perfect replacement for the infamous DA* 16-50 f/2.8. Also sadly very few people in India now sell lenses for Pentax.
07-15-2010, 07:42 AM   #13
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QuoteOriginally posted by janosh Quote
Pentax obviously could make lenses with Canon and Nikon mounts if they wanted to do that.

Pentax made lenses with Leica screw thread mounts, sold them instantly, and have a great reputation among Leica users.

I think their business decisions boil down to two markets: undemanding/low quality and demanding/high quality. Minolta did that with their standard lenses and their "Celtic" junque.
Well, to be truthful, I don't think that either Canon or Nikon would license out the rights to Pentax for their mounts. So the real correct answer is they can make lenses with those mounts but are not allowed to do so. It's like GM making wheels for Fords.

NaCl(just to be absolutely correct)H2O
07-15-2010, 07:54 AM   #14
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Well, Sigma doesn't pay licensing fees. I guess they just do some kind of reverse engineering to get their lenses to work. I do think that the addition of HSM and OS adds cost to these lenses for little additional benefit. If you could get the lens without these for a couple hundred cheaper, why wouldn't you?
07-15-2010, 09:28 AM   #15
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QuoteOriginally posted by kytra Quote
i found the in-lens OS to work much slower than the in-body one, at least for the K7. Thus I agree that the in-lens is good mainly for tele, since it also stabilizes the VF image whilst the in body is more usefull in mid range/portraits.
This is a surprising (to me) but important observation. I guess I had come to believe that OS was pretty much always superior to SR. Good to know.
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