Auto Focus: EF-FX adapter adopts metal electronic contacts to support the information sharing between the lens and camera, bringing fast speed and smooth focusing experience. With the function of eye controlled focusing, supporting support real-time tracking of the subject to improve the overall stability of the shot. | Anti-shake Support: The adapter has a built-in metal electronic contact and data chip, which is still effective on the lenses with function of anti-shake, solving the problem of ghosting and blurring caused by shaking when held. | EXIF Signal Transmission: EF-FX adapter can transmit the EXIF signals to the mounted camera and record the information and details of the picture. You can check the current information on the camera or image software (Like aperture, shutter speed, exposure parameters, etc). | USB Firmware Upgrade:7artisans EF-FX adapter can connect to your computer via USB cable and EF-FX is compatible and powerful. EF/EF-S can be transferred to Fuji X bayonet cameras. The range of optional lenses is becoming wider and wider. | Adjustable diaphragm and inner wall extinction: EF-FX transfer ring has built-in electronic contacts and data chips, which can quickly and effectively adjust the diaphragm on the body, and can conduct inner wall extinction processing. The inner wall of the connecting ring is threaded extinction, without reflection and light leakage.