EF-M1 is made of metal and come with a USB port for firmware updates and gold-plated electronic contacts. * Supports electronic communication between camera and lens to enable autofocus, image stabilization, on-camera aperture control, and EXIF metadata generation when possible * EF-M1 can control the Aperture from Camera and can realize the aperture controlled high speed auto-focus, greatly convenient for users who need transfer lens for their photography. * Firmware can be upgraded .with better compatibility, can be compatible with all Canon EF/EF-S lens, to adapt to a wider range. * Compatible with your camera and lens. Anti-shake function, gold-plating contacts, excellent transmitting effect, with detachable 1/4" tripod adapter provides support for longer Canon lenses. Package include: Viltrox EF-M1 Adapter x1 Original Package Viltrox EF-M1 mount adapter is designed to allow Canon EF/EF-S series lens to be used on M4/3 camera. By adapter mounting it can achieve functions of EXIF signal transmission, AF(autofocus) and aperture adjustment,etc. Firmware upgrade can be operated via the USB port. Features: . Support AF function; . Support Exif Transmitting; . Support Electronic Aperture Control; . Support IS Stabilization; . Support USB Firmware upgrade . 1/4 Thread Tripod Foot at the Bottom; . Aluminum Alloy Made, Powerful and Stable; Attention: Before upgrading,please detach the mount adapter from camera in case that will influence the camera performance. Compatibility: -Micro M4/3 Camera Panasonic GH3 GH4 GH5 GF3 GF6 GF7 G6 G7 GM1 GM5 GX1 GX7 Olympus E-P5/E-PM2/E-PL5/E-PL6/E-PL7/OM-D E-M1/OM-D E-M5/OM-D E-M5 Mark II/OM-D E-M10