Samyang 50mm F1.4 AS UMC is a manual focus lens with a low F number. You may control the lens precisely when shooting under various exposure environment including relatively dark or too bright situations. This lens features 9 lenses in 6 groups including 1 glass aspherical lens (ASP), and 1 hybrid aspherical lens (H-ASP) to offer high resolution. Especially, H-ASP minimizes color aberration to realize exceptional image quality and high contrast for center and corner of image even when aperture is fully opened. Ultra Multi Coating (UMC) technology of Samyang Optics optimizes the light penetration and minimizes flare and ghost. With such optical construction, it has 0.45m of minimum focal length to take photos of subjects in near distance.