The Sigma 17-70mm F2.8-4.5 DC MACRO zoom lens has a minimum focusing distance of 20cm (7.9”) throughout the entire zoom range. A maximum magnification of 1:2.3 enables extreme close-up photography. An impressive achievement for a standard zoom lens. The new lens design and multi layer lens coating incorporated in the Sigma 17-70mm F2.8-4.5 DC zoom lens helps reduce flare and ghosting, a common problem with digital cameras.
A Special Low Dispersion (SLD) lens and two aspherical lens elements provide excellent correction for all types of aberrations and produce a high level of optical performance throughout the entire zoom range.
The Sigma AF 17-70mm F2.8-4.5 DC zoom offers a large F2.8 aperture at 17mm wide angle and yet it is compact, with an overall length of just 79mm (3.1”) and diameter 82.5mm (3.2”). Performance is superb, even in relatively low light conditions indoors or at dusk.
Via Digital Review
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