Rokinon MF 85mm F1.8 ED UMC CS E-mount APS-C Lens (pre-order for $399) features a sleek form factor with a bright f/1.8 maximum aperture for depth of field control and greater versatility in difficult lighting conditions. Optical design features one extra-low dispersion element, which reduces chromatic aberrations and color fringing, and one high refractive index element to control spherical aberrations for improved sharpness. Ultra Multi-Coating has also been applied to boost contrast by suppressing lens flare and ghosting. The lens has a manual focus design for precise focusing down to 2.1′ and a nine-blade diaphragm contributes to a smooth bokeh quality.