With low distortion and wide angle (109.5 ), photographers who want wide-angle photos such as landscape and architectural images can create satisfactory images. F2.8 is very bright even under relatively dark environment, clear and vivid images can be captured. Optical construction of Samyang 10mm F2.8 ED AS NCS CS features 14 lenses in 10 groups – among lenses, there are 2 glass aspherical lenses(AS) and 1 low-dispersion glass(ED). It realized the minimum focal length of 0.24m. Also, for the first time in Samyang Optics history, the independent NCS(Nano Coating System) was used. It creates even lower reflection rate than the original UMC (Ultra Multi Coating) and higher contrast. Also, the light penetration rate is very high to minimize flare and ghost.