Samyang SY12M-NX-BK 12mm F2.0 Ultra Wide Angle Lens for Samsung NX Cameras, Black Focuses to 7.9" (0.2m) and Accepts 67 Filters 98.9 Degree Angle of View / 18mm (35mm Equivalent Fast f/2.0 Maximum Aperture Benefits Working in Low-Light Conditions Nano Coating System (NCS) For Increased Light Transmission and Reduced Internal Reflections Utilizes 12 High Precision Glass Lens Elements Including 1 Hybrid Aspherical (H-ASP) + 1 Aspherical (AS) + 1 Low-Dispersion (ED) High Precision Glass Lens Elements For Superior Image Quality