Sigma 18-35/1.8 DC HSM Art for Canon

The Sigma 18-35mm f1.8 DC Art HSM Lens is the first wide-angle zoom lens (as of 22nd April 2013) to achieve a maximum aperture of f/1.8 throughout the entire zoom range. This lens incorporates a wide glass moulded aspherical lens with Special Low Dispersion (SLD) glass to compensate for aberrations and curvature at the widest angle.