Viltrox EF-NEX IV High Speed Auto Focus Adapter for Canon EF/EF-S to Sony E Mount

Mounts Canon EF/EF-S Lenses to Sony A7 series full frame, Sony A9, A7, A6XXX and NEX series cameras
Two Auto-focus mode switches (PDAF and CDAF ); EXIF signal transmission function; Support adjustable aperture from camera body to lens's aperture.
This EF-NEX IV lens adapter can achieve up to 50% speed improvement.