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Latest Review Posted	Sigma DC Macro 17-70mm F2.8-4.5 I bought this lens used in Hong Kong over a year ago and have been happy with the results to date. For the price it would be hard to complain. I've been using it on my K10D. On the good side the zoom range is perfect for an urban walk about lens and it has good enough speed even in the longer focal length to be used handheld in the twilight. The CA is fairly well controlled and the weight is solid but an easy carry. As a portrait lens it performs well with good sharpness and color though even at 2.8 it can be hard to get good separation from the background. The cons are the zoom creep that I solve with a rubber wrist band my daughter gave me.:) The sharpness is good up close but can be quite spotty in longer focal distances. So though environmental portraiture is not its strong suit it has enough other strengths to warrant purchasing one. https://www.pentaxforums.com/gallery/images/18209/large/1_Water-_-Stump_2012Jun23_1271_NWM_.jpg https://www.pentaxforums.com/gallery/images/18209/large/1_Sam-Fishing_2012Jun23_1281_NWM_.jpg

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