F Mount Lens/DX Format 16mm (35mm Equivalent) Aperture Range: f/2.8 to 22 Non-Circular 180° Angle of View One ED Glass & One Aspherical Element Super Integrated Lens Coating Close Range Correction System Minimum Focus Distance: 5.5″ Built-In Lens Hood; Gelatine Filters Rounded 7-Blade Diaphragm