Januari 2010 is the release period for this new Sigma Zoom lens 17-70mm. Available in Nikon, Canon, Sony, Pentax and Sigma mounts, the new Sigma f/2.8-4 DC Macro OS HSM features stabilized optics and fast HyperSonic Motor (HSM) driven focusing, along with impressive close-up capabilities.
Sigma’s Optical Stabiliser system reportedly offers a shutter speed saving around four stops. It’s compatible with the build in anti-shake function found in Sony and Pentax bodies also. The HSM enables quite, high-speed autofocus, while the three aspherical lenses, one Extraordinary Low Dispersion (ELD) element and Super Multi-Layer coating should ensure crisp, high contrast images.
The lens offers decent close-up potential too, with a minimum focusing distance of 22cm throughout the zoom range and a maximum magnification ratio of 1:2.7. This combined with its relatively fast maximum aperture range and image stabilization, makes the Sigma a tempting alternative to the majority of D-SLR kit lenses.
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