APS-C | f/1.4 to f/16 45mm (Full-Frame Equivalent) Rounded 9-Blade Diaphragm Stepping Motor AF System Super Multi-Layer Coating Two Aspherical Elements One High-Refractive Index Element   A fast, versatile prime,...

E-Mount Lens/Full-Frame Format Aperture Range: f/2.8 to f/22 Six FLD Elements, Two SLD Elements Three Aspherical Elements Super Multi-Layer & Nano Porous Coatings Stepping Motor AF System Dust and Splash...

Full-Frame | f/1.4 to f/16 Designed for Astrophotography HLA Autofocus Motor TS-141 Tripod Socket Rounded 11-Blade Diaphragm Dust and Splashproof Design Created to capture bright, sharp, and star-filled imagery, the Sigma...

E-Mount Lens/Full-Frame Format Aperture Range: f/2.8 to f/22 Two FLD Elements, Two SLD Elements Three Aspherical Elements The 28-70mm f/2.8 DG DN Contemporary Lens for Sony E-Mount from Sigma is a versatile wide-angle to...

APS-C | f/1.4 to f/16 24mm (Full-Frame Equivalent) Rounded 9-Blade Diaphragm Stepping Motor AF System Super Multi-Layer Coating Two Aspherical Elements Two SLD Elements, Three FLD Elements Weather-Sealed Construction Combining...