The Sigma AF 18-250mm f3.5-6.3 DC Macro OS HSM is a versatile all-in-one zoom lens designed for Nikon DX-format (APS-C) digital SLRs. With an impressive 13.8x zoom range spanning from wide-angle 18mm to telephoto 250mm, this compact travel companion combines the convenience of multiple lenses into one lightweight barrel. Built-in Optical Stabilisation provides the equivalent of up to 4 stops of shake reduction, allowing handheld shooting in lower light conditions. The fast and quiet Hyper Sonic Motor (HSM) autofocus system ensures precise, silent focusing, whilst the macro capability delivers impressive 1:2.9 magnification for close-up photography. Four Special Low Dispersion (SLD) glass elements and three aspherical lens elements work together to minimise aberrations and deliver sharp images throughout the entire zoom range. Internal focus mechanism means you can easily attach angle-critical filters without rotation issues.