The Metabones Canon EF to E-Mount Speed Booster MB_SPEF-E-BM1 helps in increasing the angle of view as well as increasing the maximum aperture of the lens by 1 f-stop. It comes with a detachable tripod foot that is compatible with Arca Swiss, Markins, and Photo Clam ball heads. It helps in condensing the light from the lens and further projects it onto the APS-C sensor without vignetting. This makes the lens more effective even in low-light conditions. Made of machined brass, it is finished in satin black and chromium-plated on both mounts that ensures the smooth mounting and functionality.