The Rokinon 50mm T/1.5 AS UMC Cine DS Lens provides a very fast maximum aperture of T/1.5 for effective low light capture and shallow depth of field control and an 8 blade iris for attractive bokeh. When used on Micro Four Thirds format cameras it offers a 35mm equivalent focal length of 100mm pushing it into a telephoto angle of view. Optimized for cinema and video the focus and aperture control rings are outfitted with industry standard gearing which provides an interface for working with a traditional follow focus. The aperture control ring has also been de-clicked which enables smooth iris pulls. Additional features include: bright aperture and distance markings; minimum focus distance of 1.5 feet; internal focusing; 9 elements in 6 groups lens construction; 1 aspherical element and 1 hybrid aspherical element; lens multi-coating; 77mm filter diameter; color matched with other Rokinon DS Cine lenses; marked with focusing scales on each side of the barrel.