Viltrox EF-R3 Pro 0.71x Focal Reducer with fixed plate for Canon EF lens to mount on RF Mount cine camera (EOS C70, RED Komodo 6K...). Viltrox EF-R3 Pro speed booster allows Canon EF mount lens series to pair with Canon RF mount cinema cameras, e.g. Canon EOS C70/RED Komodo models. The adapter offers a 0.71x focal reducer, supports full dual-pixel, IS lens stabilization and electronic aperture control. The EF mount locking kit contribute to a more stable mounting between the EF mount and the RF-mount. It also enables EXIF info transmission and provides a USB port for firmware upgrade.