Rokinon FE14M-S 14mm F2.8 Ultra Wide Fixed Lens for Sony Alpha A Mount (Black) Lens not Zoomable Maximum Diameter: 3.4 inches (87mm) Minimum Focusing Distance of 11 inches This is the new updated UMC version 16 Elements in 12 Groups Aperture Rane: F/2.8 - F/24 6 Diaphragm Blades