Product highlights:
- Canon EF lens to Sony E body adapter
- Automatic focus and aperture adjustment
- 4 elements in 4 groups optics
- 1f stop increase
- USB port for firmware upgrades
- Gold-plated electronics for optimum performance
- CDAF/PDAF focus mode switch selector
- Not compatible with EF-S lens
Viltrox EF-E II Electronic F Booster Adapter for Sony E Camera
Designed for APS-C camera and Canon EF mount lenses, the Viltrox EF-E II Electronic F Booster Adapter for Sony E Camera allows half frame cameras to produce full frame image quality. Thanks to the increased depth of field and reduced focal length, the booster delivers sharper images. Dismounting is easy with one button press. The booster features Automatic focus and aperture adjustment and is compatible with standard 1/4 tripod mounts and works with Sony A9/A7/A7R/A7S/A6XXX/NEX. It has a durable zinc alloy construction and a USB port for firmware upgrades.
Ratings and reviews
Viltrox EF-E II Electronic F Booster Adapter for Sony E Camera 

Viltrox EF-E II Electronic F Booster Adapter for Sony E Camera
SKU: EF-EII