The Samyang 10mm f2.8 ED AS NCS ultra wide-angle lens with Nikon F fit has been carefully constructed to obtain the highest possible optical parameters, while remaining at a manageable size and weight. This f2.8 fast, manual focus prime lens provides an exceptionally wide field of view of up to 109.5 degrees making it perfect for indoor, architecture, sport, journalism, landscape and lowlight photography. The product’s optics comprise 14 elements divided into 10 groups, including 2 aspherical AS lenses and one lens made from extra-low dispersion (ED) glass. This is also the first Samyang lens to feature a nano crystal anti-reflection coating system. This technology provides better light transmission, increased resistance to reflections and higher contrast. Designed for Nikon’s DX-format DSLRs and is not suitable for full-frame.