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Old Feb 7, 2011, 11:23 PM   #11
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DA 14mm f2.8
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Pentax K5, K3:
FA 35mm f2, FA 50 f1.4, FA 28-70mm f4, FA 28-80mm f3.5-5.6, FA 80-320mm f4.5-5.6, F 50mm f1.7, Tamron SP 70-200mm f2.8 Di, DA 10-17 f3.5-4.5, DA 14 f2.8, DA 16-45mm f4, DA 18-55mm f3.5-5.6 WR, DA 50-200mm f4-5.6 WR, AF-540FGZ

Olympus E-P2, E-P5, OM-D E-M1: 9mm to 150mm lenses

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Old Feb 7, 2011, 11:37 PM   #12
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I like your bluntness Ira.
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Old Feb 8, 2011, 12:04 PM   #13
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Have you looked at the Tamron 10-24mm? The extra reach out to 24mm makes it easier to leave on your camera over the sigma 10-20mm, and it is also slightly faster (range F3.5-4.5). I had one for a couple of days (until I realized all I need for wide-angle is summed up in the DA15mm LTD - awesome choice if you haven't considered it), and the tamron performed quite well. It is also quite a good deal and has a US rebate going on at the moment.
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Old Feb 8, 2011, 3:10 PM   #14
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thanks for the suggestions milrod, but i'm looking something a bit faster for interior shots without the need for a flash. Something 3.5 or faster, preferably 2.8 or faster.
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Old Feb 8, 2011, 3:22 PM   #15
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Don't think Tamron has anything like SDM or HSM for Pentax at the moment. The new Sigma has it - that might be a viable alternative - cheaper and HSM. But it does sound like the 14 is calling your name (like the 31 is calling mine). Any chance you could eventually get both the 14 and one of the zooms (perhaps later)? That's more or less my plan for the 31 and 16-50 (the weather sealing is significant for me, as my blowing sand, surf and snow pictures can attest to). I could easily see a reason to have both the 14 and the 16-50, they really are different animals, offering different capabilities.
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Old Feb 8, 2011, 3:47 PM   #16
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I had a nice long answer to your questions written out yesterday .. and then Safari crashed (my own fault - I shouldn't have 200+ websites open at once) !

For weddings, events etc. you are going to need flexibility, you CAN'T always move your feet, no time, no space etc. so a good f2.8 zoom is important. The Tamron 17-50/2.8 is on my camera from the moment I walk out the door every day, really sharp lense, it doesn't have HSM but I haven't noticed the AF at all and it's no slouch (SDM wouldn't give you an advantage there anyway, it's quiet, not fast).

The new Sigma 17-50/2.8 has MTF figures off the chart, extremely sharp, in the USA I believe it's quite a bit more than the Tamron but not as much as the DA*16-50. Though neither the Sigma nor Tamron are weather sealed if that's an issue at all (plastic bags and rubber bands are cheap).

I see you are using the Kr - does it have in camera adjustment for lenses FF/ BF ing ? You will need to adjust in-camera for the Tamron or the Sigma. I used +5 for my Tamron but it will vary from lense to lense.
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Pentax : 15 Ltd, 77 Ltd, 43/1.9 Ltd, Cosina 55/1.2, DA*300/4, Contax Zeiss Distagon 28/2.8, Raynox 150/250, AFA x1.7, Metz 50 af1.

Nikon : D800, D600, Sigma 500/4.5, Sigma 120-300/2.8, Zeiss Distagon ZF2 - 21/2.8, Zeiss Distagon ZF2 - 35/2.0, Nikkor 85/1.8G, Sigma 50/1.4. Nikon x1.4 TC, Sigma x2.0 TC
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Old Feb 8, 2011, 5:06 PM   #17
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the non-sdm is bugging me right now. I really like my lenses to be as silent as possible. Now im leaning more towards the pentax 16-50, sigma 17-50, or tamron 17-50. That will leave me enough room in my focal length range to buy a 10mm (or close to that) lens sometime in the future.

(I changed my decision twice while writing this post.)

If there is a lens with f3.5 (preferably 2.8) or faster, with a focal range of something like 12-35, I would buy that. in any make.
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Old Feb 8, 2011, 5:25 PM   #18
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My choice (i think) is:

Sigma 17-50mm F2.8 EX DC OS HSM
or
Pentax SMC DA* 16-50mm f/2.8 ED AL IF SDM

I am going to buy the sigma i think though because i cant seem to find a good reason
as to why the pentax is more expensive and beneficial for my needs. I dont need WR.
Is the lens quality worth the extra $100?



I can't thank you all enough for the help.
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Old Feb 8, 2011, 10:43 PM   #19
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The 16-50 is a wonderful lense IQ-wise but there have been many reports of SDM failure), whereas the Sigma is a newer lense and doesn't seem to have the stock of images out there on-line to peruse yet.

However the HSM is definitely faster and from all reports near silent too. I would check the guarantees too, Sigma's is definitely longer 3 years or more ?
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Pentax : 15 Ltd, 77 Ltd, 43/1.9 Ltd, Cosina 55/1.2, DA*300/4, Contax Zeiss Distagon 28/2.8, Raynox 150/250, AFA x1.7, Metz 50 af1.

Nikon : D800, D600, Sigma 500/4.5, Sigma 120-300/2.8, Zeiss Distagon ZF2 - 21/2.8, Zeiss Distagon ZF2 - 35/2.0, Nikkor 85/1.8G, Sigma 50/1.4. Nikon x1.4 TC, Sigma x2.0 TC
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Old Feb 8, 2011, 11:19 PM   #20
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I prefer the simplicity of the non SDM lenses although the SDMs will focus faster and silently. That is I prefer them until Pentax pulls a Nikon on us and decides to leave the focus motor out of future entry level models (not something I fear as long as the excellent Limited primes are around). The DA 14mm does have internal focus so it is a little quieter than most of the screw drive lenses, and fairly fast, but not as flexible in use as the zooms you have settled on. Good luck, let us know the results when you get your new lens.
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http://aicphotography.blogspot.com/
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Current equipment
Pentax K5, K3:
FA 35mm f2, FA 50 f1.4, FA 28-70mm f4, FA 28-80mm f3.5-5.6, FA 80-320mm f4.5-5.6, F 50mm f1.7, Tamron SP 70-200mm f2.8 Di, DA 10-17 f3.5-4.5, DA 14 f2.8, DA 16-45mm f4, DA 18-55mm f3.5-5.6 WR, DA 50-200mm f4-5.6 WR, AF-540FGZ

Olympus E-P2, E-P5, OM-D E-M1: 9mm to 150mm lenses

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