【AF Autofocus】: Dual focus mode, PDAF phase focus/CDAF contrast focus, two modes, switching in one second. Supports real-time tracking and video real-time eye focus functions to track subjects in real time and improve the overall stability of shooting. | 【Supports IS Image Anti-Shake Technology】: After the 7artisans EF-SE adapter ring is adapted to a lens that supports anti-shake function, it will still maintain its function and improve its shooting stability. | 【Supports Aperture Adjustment】: The 7artisans EF-SE automatic adapter ring has built-in electronic contacts and data chips, which can effectively and quickly adjust the aperture on the body. | 【USB Firmware Upgrade】: Built-in USB firmware upgrade interface, which can be compatible with new models and new lenses after upgrade, solving compatibility issues. EXIF information transmission can record the shooting information and data of the photo, and supports the camera body and picture software to view aperture, shutter, ISO and other information. | 【Expand the Value of the Lens】: The EF-SE adapter ring can easily transfer Canon EF series lenses to Sony E series bodies. Expand the value of your huge EF lens set. The autofocus function may not be possible on some old lenses. If you have any questions after purchase, please feel free to contact us and we will solve it for you within 24 hours!