Rokinon 16M-C 16mm f/2.0 Aspherical Wide Angle Lens for Canon EF Cameras Ultra wide angle 16mm lens Focal Length: 16mm, Minimum Focusing Distance : 7.9 inches (0.2m) Large f/2.0 aperture for low light photography and night street shooting Designed for cameras with cropped APS-C image sensors, Includes Removable lens hood and takes 77mm filters Available for Canon EOS, Nikon, Sony Alpha, Pentax, Micro 4/3, Sony E-Mount, Canon M, Fuji X, and Samsung NX.Optical Construction: 13 Glass