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09-04-2011, 03:58 PM   #1
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Upgrading lenses, any suggestions?

Hello, I got a K-5 a couple of months ago to upgrade from my MZ-S I only have an FA 28-70mm f4.0, and a 70-200mm f4.0. I have some cash to make a new investment in lenses. this is what I have come up with, However I don't have alot of experience with various lenses and brands so if anyone has any suggestions to switch any out with others or any more to add to the list can you let me know?
the list

1. Pentax Zoom Telephoto 60-250mm f/4 ED DA* SDM Autofocus Lens
2. Pentax Telephoto 55mm f/1.4 DA* SDM Autofocus Lens for Digital SLR
3. Pentax smc Pentax-D FA 100mm f/2.8 WR Macro Lens
4. Sigma 50-500mm F/4.5-6.3 APO DG OS HSM Lens for Pentax
5. Pentax Zoom Normal-Telephoto SMCP-DA* 50-135mm f/2.8 ED (IF) SDM Autofocus
6. Pentax Zoom Super Wide-Telephoto SMCP-DA* 16-50mm f/2.8 ED AL (IF) SDM

I am debating getting:

1. Sigma 85mm f/1.4 EX DG HSM Lens For Pentax Digital SLR Cameras
2. Sigma 70-200mm f/2.8 EX DG APO OS HSM for Pentax

I like to take pictures in the theater particularly of Dance and other rabid movement in low light settings, but I like the images sharp (really hard to do with f4) and I also love to take pictures out in the wilderness of wildlife and landscapes. If anyone has any suggestions could you let me know

09-04-2011, 05:10 PM   #2
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For dance in indoor settings, a zoom lens is a whole lot more convenient. Its hard to zoom with your feet when you are in a crowd. The 50-135 would be great but if you want to shoot wildlife its too short. You could get the 50-135 for dances and the longer lens like the sigma 50-500 for wildlife.

Indoor dance with 50-135:
https://www.pentaxforums.com/forums/attachments/photo-critique/100119d1313111...ydancer1-1.jpg
09-04-2011, 06:02 PM   #3
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I have a Tamron 28-75 f2.8. It is a gem of a lens and performs admirably in low light. For the price to performance, it would be hard to beat the Tamron.
09-04-2011, 06:08 PM   #4
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The above mentioned Tamron, together with a 70-200mm f/2.8, would be perfect for photographing the dance performances. If you're close to the stage, 28-75mm will do. Farther away in the audience, 70-200mm.

09-04-2011, 06:20 PM   #5
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for theatre and dance, i've gotten some pretty good result with the 70-200 i used to own. It also proved to be a competent enough lens for shooting at the zoo. If you shoot right at the front of the stage, consider looking for the sigma 50-150 to give you a bit extra versatility on the wide end
09-04-2011, 06:40 PM   #6
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wich is better

wich is better the "70-200mm f/2.8 EX DG APO OS HSM for Pentax" or the "70-200mm f/2.8 Di LD (IF) Macro AF Lens for Pentax AF"
09-04-2011, 06:47 PM   #7
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QuoteOriginally posted by beales1986 Quote
I am debating getting: 1. Sigma 85mm f/1.4 EX DG HSM Lens For Pentax Digital SLR Cameras 2. Sigma 70-200mm f/2.8 EX DG APO OS HSM for Pentax
Those are two top-notch lenses that currently have no Pentax counterparts. I can highly recommend both. The 85mm is a bit bulky (compared to the FA* 85mm), but it's got good IQ.

QuoteOriginally posted by beales1986 Quote
wich is better the "70-200mm f/2.8 EX DG APO OS HSM for Pentax" or the "70-200mm f/2.8 Di LD (IF) Macro AF Lens for Pentax AF"
See this lens comparison: Fast Sports Zoom Lenses for Pentax - 70-200mm Sigma & Tamron

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09-04-2011, 06:59 PM   #8
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I use the FA43 Limited and FA77 Limited for dance, one on each camera. I have sharper photos but like this one:




I often shoot faster than f/2.8 so it's difficult to recommend any zoom.

09-04-2011, 10:08 PM   #9
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Unless you're going to be fairly close to the stage, your only real choice based on your stated needs is the Sigma 70-200. I have the non-OS version of the lens and love it.

Just make sure to test your lenses to verify Auto-focus accuracy and to see if they need to be calibrated. Depending on your copy, you might not be able to use the K5's built-in AF calibration as it might need more than provided. This has been reported by several other users and I can confirm the same with my 70-200 and 24-70.

I don't consider this a flaw per say, just in need of calibration. My DA*16-50 needed slight adjustment as well, so have other Pentax lenses I've used in the past, including the DA*200.

It's just that these two Sigmas I own need more calibration than I can do at home. So I will be sending mine to Sigma very soon.
09-05-2011, 05:55 AM   #10
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You don't say whether you took the kit lens or not so it is hard to advise but assuming you took a body only the 16-50 F2.8 would be the most useful to you. Your other lenses will work just fine and due to the crop factor your 28-70 zoom will behave more like a 42-105mm zoom. i.e. You will not have a credible wide angle option. This is the biggest issue when going from film to digital with a lens kit
09-05-2011, 06:30 AM   #11
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Auto focus in low light dance/performance could be an issue, and also depend on how far you are sitting. I tried tamron 28-75, da 50-135 on those events without consistent results. So now i am going full manual focus with high iso performance of K5.

Based on my assume of your usage, i would go for the da*50-135, which is suited for most cases.
09-05-2011, 07:24 AM   #12
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You may want to have a look what other have achieved with various lenses.
For instance here: Montreux Jazz Festival 2011 Photo Gallery by Dominique Schreckling at pbase.com

Cheers, Bert
09-05-2011, 07:36 AM   #13
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No I didn't get the kit, I figured I would wait until I had the money and get some premium lenses, most of my shots come from side stage I only shoot from the front in dress rehearsals
09-05-2011, 07:52 AM   #14
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Well when you know your distance then you wich lens to take. What I read is that you have good access to the dancefloor (working there?). Then zooming with your feet isn't a big problem. I say, go with some nice primes for that.

Any of these are good for that purpose:
FA 31mm, FA 43mm, FA 77mm, FA*85mm, DA*55mm (the DA* is a slow focussing lens) or even a DA 40mm pancake.

Or look into some other brands:
Sigma 30mm (not my favorite), 50mm, 85mm.

Voightländer 40mm or 58mm (manual focussing).

For wildlife I have no suggestion since it isn't my thing.
09-05-2011, 07:54 AM   #15
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QuoteOriginally posted by Edgar_in_Indy Quote
The above mentioned Tamron, together with a 70-200mm f/2.8, would be perfect for photographing the dance performances. If you're close to the stage, 28-75mm will do. Farther away in the audience, 70-200mm.
This makes sense to me--although you might consider the DA 50-135 or Sigma 50-150 (no longer available new) as somewhat smaller, lighter options at the long end.
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