Sigma 28-70mm f/2.8 DG DN Contemporary Lens for Sony E

Key Features. E-Mount Lens/Full-Frame Format Aperture Range: f/2.8 to f/22 Two FLD Elements, Two SLD Elements Three Aspherical Elements Super Multi-Layer & Nano Porous Coatings Water- and Oil-Repellent Front Coating Stepping Motor AF System Rounded 9-Blade Diaphragm Dust- and Splash-Proof Design