Since showing a prototype of this lens at Photokina 2012, Samyang have carefully refined the design, resulting in the new 10mm f 2.8 ED AS NCS CS lens featuring parameters & capabilities comparable to the best wideangle prime & zoom lenses on the market. This optic is an ideal tool for indoor, architecture, sport, journalism & landscape photography. It provides an exceptionally wide field of view of up to 109.5 degrees & rectilinear image mapping function. Owing to a fast f 2.8 lens speed you can also use the lens in low light conditions. The product's optics comprise 14 elements divided into 10 groups, including 2 aspherical AS lenses & 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 & higher contrast. All of this translates into the supreme optical resolution of the lens.