The EF-E II Electronic Adapter (F Booster) lens from Viltrox connects Canon EF lens to Sony APS-C cameras. The built-in optics increase light input by one F stop and reduce focal length by x0.71. The lens adapter supports AF(auto focus) and 50% focusing speed improvement; Focus mode switching between CDAF and PDAF. It has a gold-plated electronic contact to achieve information-sharing between an attached camera and lens; EXIF signal transmitting and a micro USB port for firmware update help accept more new camera and lens models. Solid design and detachable, tripod mount socket with 1/4 screws.
It supports Sony A9/A7/A7R/A7S/A6XXX/NEX cameras and VG camcorders (APS-C mode should be turn on for full frame camera).