VILTROX EF-E II 0.71x Auto Focus Reducer Speed Booster Adapter for Canon EF to Sony E-Mount Camera a9 a7r iii a7r ii a7iii a7s a6500 a6300

New Viltrox EF-E II mount f/Booster for Canon EOS EF mount lens to Sony NEX E Mount Adapter
Supports auto focus function
Suitable for APS-C camera, 0.71x magnification, +1 f/stop
Same function as Metabones Speed Booster

Detail Information
Viltrox f/Booster series can allow most of the lens to be used E-mount camera bodies mostly Sony's. Thanks to the built-in optical lens (4 elements / 4 groups), it can increase the aperture by one f/stop and extend the focal length. Allowing you to get in the larger area of light and achieve the depth of field that you prefer.
EF-E (the one used for Canon EF lens) is Auto Focus which can't be retained in the other models in this series.
Viltrox f/Booster are quality made using precision-machined aluminium alloy with chromium plating on both of the camera body and the lens side of the booster to ensure smooth and endurable mounting, quality aesthetic.
With optical lens provided by our Japanese partner and a surprisingly attractive price, it is surely a smart choice to choose Viltrox f/Booster.
It can be upgraded by USB port.
Usage of Focus Mode Switch ( PDAF&CDAF ):
1. Before using, please confirm the focus mode of the lens mount adapter, and then attach it on the camera.
2. If you need to change the focus mode, please take the adapter ring off, slide the focus mode switch, and attach it on the camera then.

Specifications:
Lens mount: Canon EF lens
Magnification: 0.71x
Aperture: to be increased by one f/stop
Tripod mount: removable
Optical construction: 4 elements / 4 groups