The Metabones Speed Booster allows you to use your Canon EF lenses on the Black Magic Pocket Cinema Camera with Micro Four Thirds fit. Beyond simply converting the lens mount, the 0.58x Speed Booster reduces the crop factor of the BMPCC from 3.02x to 1.75x and produces the largest aperture optics currently available, with a maximum output aperture of f/0.74.
