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12-18-2011, 07:20 PM   #1
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Zoom lens for portrait

I have been doing a bit more portrait work lately and although I thought I had a pretty good range of lenses (DA 40mm, DA 70mm, DA 16-45mm and DA 55-300mm) I am finding some additional flexibility between 40mm and 70mm would be good. I use a K20d at present. My shoots vary between full body and head shots. I love the DA 70mm but it can be a fraction long for full body. I am looking for a fast focusing lens and a high quality image. Any thoughts much appreciated.

12-18-2011, 07:27 PM   #2
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The low-cost leader: F35-70, available for maybe US$50 by itself, less if coupled with a SF-1 or similar-vintage AF film cam. Agile (VERY fast focusing), sharp as a bag of primes, Pentax's smallest zoom ever, one of my favorites. It's also f/3.5-4.5, not the fastest. Some folks prefer an f/2.8 like the Sigma 28-70 or Tamron 28-75. Faster, much larger and more expensive. Check the reviews. Good luck!

Last edited by RioRico; 12-18-2011 at 07:37 PM.
12-18-2011, 07:54 PM   #3
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tamron 28-75 f2.8 should be the best fit for u
12-18-2011, 08:31 PM   #4
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It's a bit on the longer side, but many Pentaxians use the DA* 50-135 f/2.8 for portrait work. It's a fantastic lens if you can afford it, don't mind glass that big and heavy, or are using a tripod. Very high quality but it's not cheap. If not that, then the Tamron 28-75.

12-19-2011, 02:24 PM   #5
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I'd say DA*50-135 would do the trick.
If you prefer the mid range then the old style pro glass range of 24/28 - 70/75 is fantastic.

I have the Pentax FA* 28-70 and love it for people shots. It gives you good range, fast AF and excellent picture quality. Many will say Tamron 28-75 would match the IQ for the fraction of cost but the build is well below par IMO.
Anyway, good luck....
12-22-2011, 08:46 AM   #6
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I agree about the Tamron build quality, otherwise it's a fine lens. I have both that, and the DA*50-135, which is what I use most frequently for portraits. The focal length is better (for me) for that purpose, and the IQ is better. (Although the Tamron IQ is also quite good.) I do think the Tamron's AF speed is a little better, if that is important to you. Usually though, if I'm doing portraits, especially something outdoors, I always bring the DA*50-135 (and the FA 43 Ltd!). However, in the future I plan on trying just the FA 43 and the DA 100 WR, which would still cover my bases, should produce great images, and will also be a lighter kit. But the DA*50-135 is still one of my favorite lenses and sees a lot of use.
12-23-2011, 02:47 PM   #7
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Sigma 70-200/2.8

I prefer longer zooms, something like Sigma 70-200/2.8.

Pentax K20D ,Sigma APO 70-200mm F2.8 II EX DG MACRO HSM
1/400s f/5.0 at 200.0mm iso200

Pentax K20D ,Sigma APO 70-200mm F2.8 II EX DG MACRO HSM
1/800s f/2.8 at 200.0mm iso200
12-23-2011, 05:10 PM   #8
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The Sigma 70-200mm f/2.8 HSM is a fantastic lens.
For a while I thought mine was so-so until I sent my K-5 to Pentax Japan for AF calibration.
When I got my camera back, the lens has been stellar even wide open. Focus was spot on even indoors with no AF adjustment needed.


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