Viltrox Adapter EF-NEX IV

Model: EF-NEX IV adapter mount
Weight: 174 g
Dimensions (W×H×D) 69×69×95mm
Size 66.6× 26mm
Material: Quality plastics
Compatible camera: Sony NEX-5C/C3/5N/F3/5R/6/7K/FS700VG20/VG900/A7 series
Compatible lens Canon EF Series lens
Included Items Extension Tube, Manual
Gold-plated electronic contact, Auto-focus function, 
Built-in metal electronic contact, precise focus
It can realize AF adjustable aperture from camera body to lens's aperture
More durable metal material
Compatible for all the EF-lens
Viltrox EF-NEX IV is designed for Canon EF Lenses to be used on Sony E mount series mirrorless cameras.
It is compatible with Sony A7 series full frame cameras, featuring functions of Auto focus (PDAF&CDAF). 
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. 
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*Auto focus on Photo only