Summary: Sigma's latest 'C' badged 17-70mm F2.8-4 is an excellent upgrade option for SLR shooters who've outgrown their kit zooms, and are looking for better image quality and more creative flexibility. It offers a fine balance of zoom range and maximum aperture, while still being highly portable.
Pros: Useful combination of zoom range and relatively fast aperture, Very good image quality across most of the range, Compact size, Reasonably fast and near-silent autofocus, Effective image stabilisation
Cons: Somewhat weak image quality at wideangle (soft corners and chromatic aberration), Macro shooting a little impractical (very short working distance)
Excerpt: The Sigma 17-70mm F2.8 -4 DC Macro OS HSM is the practical zoom. A large-aperture, standard zoom lens for digital cameras with an open-aperture value of F2.8 (at 17mm) and covers the most frequently used focal lengths.
Lens Test: Sigma 17-70mm f/2.8-4 DC OS Macro HSM AF
1 May 2012
Excerpt: An upgrade of Sigma’s digital-only macro lens (the 17–70mm f/2.8–4.5), this large-aperture standard zoom ($450, street) adds a tad more speed, another aspheric element (for a total of three), on-board image stabilization, and several ounces more in weight.
Conclusion: The Sigma 17-70mm F2.8-4 DC Macro OS HSM lens is a solid replacement for the 18-55mm that shipped with your camera, but another Sigma zoom is our Editors' Choice.
Pros: Sharp. 4.1x zoom range. 1:2.9 macro magnification. Optical stabilization. Wide aperture. Compact and light. Available for multiple camera systems. Compatibility with Sigma USB dock and mount conversion service.
Excerpt: Gary Wolstenholme takes a look at Sigma's 17-70mm lens with optical stabilisation. Sigma's 17-70mm lenses have been a popular upgrade for people wishing to move up from the standard 18-55mm kit lenses.
REVIEW: Sigma 17-70mm f/2.8-4 DC Macro OS HSM C Lens Review
5 November 2011
Excerpt: Handling and features 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.
Excerpt: The first of Sigma’s “Contempo-rary” lenses, this APS-C-format 17–70mm f/2.8–4 DC OS ($499, street) suits a wide range of photo subjects. With image stabilization and 1:2.33 magnification, it is a true utility player.
Summary: Overall it is hard to believe that this lens is for real: it has stunning resolution, optical stabilisation, a more-than-four-times zoom range and can be purchased for not much over £300. Fantastic!
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.
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