Sigma 18-250mm f/3.5-6.3 DC OS HSM IF Lens for Canon Auto Focus Digital SLR Cameras Equipped with Sigma's own unique OS (Optical Stabilizer) technology Four SLD elements and three Aspherical lenses provide high image quality throughout the entire zoom range Minimum focusing distance of 45cm/17.7 inches and a maximum magnification of 1:3.4 makes it ideal for close-up photography Super multi-layer coating reduces flare and ghosting For Canon digital SLR cameras