Viltrox EF-E II Lens Mount AF Auto Focus Reducer Speed Booster Adapter

Features:
Lens adapter for Canon EF series lens to use for Sony E-mount (APS-C) series cameras.
Auto focus, support CDAF and PDAF, your focusing process can be quicker or easier.
0.71x multiply the original focal length, which help to accelerate focusing speed by 50%.
Built-in 4 groups 4 glasses optical glass, aperture is increased by 3 stops, so you can better distinguish the main object and blur out background.
Gold-plated copper contact enhance EXIF signal transmission.
Support USB upgrade for sustainable usage.
CNC precision constructed aluminum body ensure perfect installation.