An ultra wide angle, prime lens, the Samyang 10mm f/2.8 ED AS NCS CS has been designed to work with APS-C cameras. Its optics comprise of 14 lens elements arranged in 9 groups. The model has been fitted with one ED lens with a low dispersion factor and two aspherical lens elements. All lens elements have been covered with the highest-quality anti-reflective NCS coatings. The lens provides maximum angle of view equal to 115.7 degrees, while the minimum focusing distance is 0.25 meters.