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03-05-2010, 08:31 PM   #16
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Enjoy shooting with it.
The regular HMC (O) variety aren't so expensive but are rated very well - well worth the money, so give it a thought - if they're a little expensive locally, consider eBay.

03-05-2010, 11:17 PM   #17
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I picked up a Sigma APO 70-200mm EX DG HSM II Macro a couple of weeks back for use on my K20D and I'm very happy with it. I did read a bit about faulty models and it seemed to have a bit to do with the corresponding serial number on the lens. Lenses with a serial number starting with 101,102 0r 103 had some problems with some sort of bubbling on the inside of the front lens element and also some problems with the HSM setup. The later made versions with the serial starting with 104 seemed to have all the problems fixed. I got the 104 serial number and it works perfectly. I haven't really tried it properly on a tripod yet but have had good images shot at 1/50 sec, 200mm, f2.8, ISO 400. I use a Kenko UV on it for protection and the images still seem ok, I always shoot in RAW so that probably helps to. I will have to try it on the tripod and see how sharp it is, but even handheld at 200mm its not to bad.

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70-200mm f2.8 ii, dg macro, f2.8, glory, ii, ii ex dg, image, k-mount, lens, pentax lens, settings, slr lens
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