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