AF 12mm F/2.0 Fuji X The lens structure consists of 12 elements in ten groups with five special lenses (1 H-ASP, 1 ASP and 3 ED); three additional elements with low dispersion and two aspherical elements (H-ASP and ASP) were used in an optical structure to minimize chromatic aberrations and distortion to obtain sharper images. Thanks to the optical design, the lens provides excellent image quality from the middle to the edge of the frame, even with the maximum aperture F/2.0. Ultra Multi Coating (UMC) is used on lens elements to reduce surface reflections and prevent flare and ghost effects, as well as to provide better light transmission and greater contrast.