please refer to the product description to confirm if your lens is supported or not before purchase. or you may also contact seller for confirmation before purchase. vr function supports (the models listed below) vr lens (lens with vr function) and non-vr lens (lens without vr function but can reach vr through activating camera's vr)
firmware update: please download the newest firmware file from neewer official website. the adapter must be connected with the camera and connect the camera to your computer with usb cable and then update the firmware
af function & aperture control: note: af function only supports sony a9m2/a9/a7r4/a7r3/a7r2/a7m3/a7m2/a6600/a6500/a6400/a6300/a6100. using common algorithm with great compatible lens performance; vr image stabilization, exif information complete transmission; comes with the gold-plating contact, great conductivity of signal transmitting, perfectly support high speed ...
eye controlled focus: compatible with sony cameras with eye controlled focus; when matched to cameras like sony a9ii a7m3, it can change the portrait photography mode to achieve eye auto-focus. this function equally effective during movement
material & design: designed with 1/4 screws at the bottom, which can be mounted on the tripod or other retention frame; materials of matting treatment capable of effectively absorbing lightness and avoiding the reflective phenomenon to make image more clear