Viltrox EF-E II AF Lens Adapter 0.71X Speed Booster for Canon EF to Sony E Mount
Viltrox EF-E II Electronic Adapter (F Booster) is the 2nd generation Auto Focus Reducer Speed Booster Lens Adapter. 1 x Viltrox EF-E II adapter. Slow focus will happen on low end lenses in CDAF mode.