Wide-angle prime is designed for FX-format Nikon F-mount cameras, however can also be used with DX models where it provides a 36mm equivalent focal length.. Notably fast f/1.4 maximum aperture suits working in low-light conditions and also enables greater control over depth of field for selective focus imagery. Two extra-low dispersion glass elements are used in the optical construction to reduce a variety of chromatic aberrations and color fringing for a high degree of clarity and color neutrality.. Two aspherical elements are featured to control spherical aberrations and distortion in order to produce notable sharpness and resolution.. A Nano Crystal Coating has been applied to lens elements to minimize surface and internal reflections for a marked reduction in lens flare and ghosting.