Dual focus mode:The EF-NEX IV Lens Mount Adapter,PDAF relative focus mode, providing a fast and smooth focus experience; CDAF contrast focus mode, not picky about light, high focus success rate, effectively improving the focus speed; the two modes can be switched easily and quickly | Compatibility:the lens adapter can be compatible with Canon EF/EF-S series lenses and Sony E-mount compatible interchangeable lens digital cameras, compatible with Sony full-frame A7 series cameras | EXIF information transmission and aperture adjustment function: the camera adapter adopts built-in metal electronic contacts, you can control the camera's aperture, shutter speed and ISO, and record the attribute information and shooting data of the photo | USB firmware upgrade: VILTROX EF-NEX fourth-generation built-in firmware upgrade interface, compatible with new models and new lenses, has a wider range of applications; the built-in IS lens anti-shake function allows you to shoot clearer works | 1/4’’ Tripod Screw Interface: EF-NEX IV mount adapter comes with a detachable 1/4’’ tripod mount; it supports eye focusing and can be accurately identified by the adapter ring, which is very suitable for portrait shooting