Sigma DC HSM Art 18-35mm F/1.8 (EF-Mount) LEN1267

EF-Mount Lens/APS-C Format 28.8-56mm (35mm Equivalent) Aperture Range: f/1.8 to f/16 Five SLD Elements Four Aspherical Elements Super Multi-Layer Coating Hyper Sonic Motor AF System Rounded 9-Blade Diaphragm