Large-aperture, ultra-wide-angle zoom with expressive imaging capabilitiesBy utilizing unique optics which have been designed to correct lens aberrations, the Sigma 10-18mm F2.8 Dc Dn | Contemporary produces images that are sharp across the entire image.Aspherical lens, special low-dispersion glassThe use of an aspherical lens with large eccentricity and refractive index as the first lens element has enabled a lens construction with a reduced number of elements. Used in conjunction with multiple aspherical lenses and special low-dispersion glass, the lens can produce high resolution images whilst remaining compact and lightweight.Minimum focusing distance 11.6cm, maximum magnification ratio 1:4Create expressive close-up images using the 11.6cm minimum focusing distance when shooting at 10mm. With a magnification ratio of 1:4, the lens captures unique portraits, still life and more.Extremely compact and lightweightThe Sigma 10-18mm F2.