Reviews and Problems with Sigma 17-70mm F2.8-4 DC Macro OS HSM
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Sigma 17-70mm f/2.8-4 DC Macro OS HSM C Review
9 May 2013
Excerpt: This 4.1x zoom lens for APS-C format cameras sports a variable f/2.8-4 maximum aperture, silent focusing, optical stabilisation and a closest focusing distance of 22cm throughout the zoom range. The zoom range is roughly equivalent to that of a 25.5-105mm lens used on a 35mm camera. It is available to fit Canon, Nikon and Sigma cameras and costs around £350.
Pros: Very good sharpness in the centre, Good build quality, Close focusing, Optical stabilisation
Cons: Drop off in clarity towards edges as lens is zoomed in may concern some people, Barrel distortion at 17mm