Autofocus adapter for Canon EF lenses on FUJIFX mount cameras. It allows the mounting of EF and EF-S lenses on cameras with FUJIFX connection. The firmware can be updated via the USB upgrade port. Supports EFIX signal transmission and in-body aperture adjustment. A button press is required to unlock when the camera is attached. It supports phase focus mode for faster and more accurate focusing, as well as anti-shake support. The EF-FX adapter features a built-in metal electrocatalyst and a data chip that supports the anti-shake function and resolves issues with ghosting and blurriness during sports shots or shakes when holding the camera. It has broad firmware upgrade compatibility. The EF-FX adapter ring includes integrated electronic contacts and a data chip for quick and efficient aperture adjustment in the lens. Information and data from captured photos can be saved, and aperture, shutter speed, ISO, and other details can be displayed by the camera body and photo software. The phase focus mode shortens the focusing path and requires only one calculation for focusing, enabling faster and more accurate focus.