This is the Samyang MF 85mm F1.8 CSC lens designed for Sony E-mount cameras. It is a telephoto lens specifically for Sony mirrorless E-mount systems. The lens features an F1.8 aperture for excellent low-light performance and beautiful bokeh. Its optical construction includes ED (Extra-low Dispersion) glass for reduced chromatic aberration and UMC (Ultra Multi Coating) for enhanced light transmission and clarity. This lens is ideal for portraiture and achieving a shallow depth of field.