Viltrox NF-E1 electric lens mount adapter is designed for NIKON F-mount lens to compatible for SONY E-mount cameras and camcorders. It can achieve Auto Focus, aperture control, IS function and EXIF signal transmission,bringing you to a new photographic world. Specification: Material: Aluminum Alloy Signal Transmitting: EXIF Auto Focus(AF): Support Aperture Control: Support Camera/Lens' VR Function: Support Teleconverter Lens: Support Tripod screw: 1/4 screw (undetachable) Diameter and Length: 61mm*29mm Weight: 92g Note: Autofocus function is not available in video mode. Features: Auto Focus Function:supports for SONY A9/A7RIII/A7RII/A7III/A7II/A6500/A6300 Camera only in 'Phase Detection Focus' mode. EXIF signal transmission, Aperture Control functions:supports nearly all for SONY E-Mount Cameras (Excluding for SONY Camcorders) Notice: This function is only for EMD and Pull-rod Aperture lens (Such as: G Type, E Type, and Partial D Type Lens) VR Function:supports all VR lens (The lens comes with VR function) and Non-VR lens (The lens comes with no VR function but can reach VR through activating Camera's VR). Made of strong and durable aluminum alloy, with standard 1/4" screw hole at the bottom. Support firmware upgrade via USB port. Compatibility: -Sony E-Mount Camera: A9/A7RIII/A7RII/A7III/A7II/A6500/A6300/A6400 (only in 'Phase Detection Focus' mode) -Nikon F Lens