This zoom lens was exclusively designed for use with digital SLRs with the popular APS-C sensor. This latest lens from Sigma`s DC range has a 6.9 times magnification zoom ratio. The image circle is designed to match the size of the image sensor of digital SLR cameras resulting in a surprisingly compact and lightweight superzoom lens.
A Special Low Dispersion (SLD) lens and two aspherical glass elements produce a high level of optical performance through the entire zoom range.
This lens has a minimum focusing distance of 50cm (19.6") at all focal lengths and is equipped with an inner focusing system. The non - rotating front element makes the lens particularly suitable for using the petal-shaped lens hood (supplied) and circular polarizing filters. The lens is equipped with a zoom lock which eliminates "Zoom Creep".