The Sigma 50-150mm f/2.8 II EX DC HSM lens is a compact, lightweight, large aperture telephoto zoom lens designed exclusively for digital SLR cameras. The version II of this high-quality lens has been optimised with an even better optical design, which provides optimum lens performance providing excellent correction for flare, ghosting and all types of aberrations. The super multi-layer lens coating reduce flare and ghosting and ensure sharp images throughout the entire zoom range. When used with a Pentax digital SLR camera, this lens provides an equivalent range of approx. 75-225mm. DC lenses are exclusively designed for digital SLR cameras. The image circle (rear of lens) is made to match the smaller dimensions used for the image sensor on digital cameras. As a result, these lenses are also more compact and lightweight, and are better matched to digital SLR cameras. This lens is in good overall condition with some signs of use. The glass is clean and in good condition. The lens barrel shows some cosmetic marks. There is some light dust within the lens, which would not affect optical performance at all. The focus ring is in good condition. The lens mount shows signs of use.Please Note: There are some light fibres present within the lenses internal optics. They do not appear to affect the image rendered.There are light marks on the front element. These do not appear to affect the quality of the image.Please Note: There are marks to the internal element, this has no discernible effect on the image rendered.This lens has moisture within the internal elements.