• VERSATILE COMPATIBILITY: VILTROX EF-M1 Pro Mount Adapter is compatible with EF/EF-S series lenses used on Micro 4/3 series cameras: GH5 GH4 GH6 GH5S GF5 GF1 GX9 G9 GX7 GF7 GM5; Olympus OM-D E-M1 II, E-M5 III, E-M10 III; PCC; 4K, Z CA M E2; Please contact us if you are not sure if this lens adapter ring will fit your camera • Auto Focus and Aperture Control: EF-M1 Pro adapter with reinforced copper electronic contacts provides a fast, smooth focusing experience. You can also control the M43 series camera body to adjust the aperture of the EF/EF-S lens • EXIF SIGNAL TRANSMISSION AND IS ANTI-SHAPE: The gold-plated contacts design provides better EXIF information transmission between lens and camera body. IS is effective in preventing camera body and lens from swinging We guarantee crisp, high quality images during shooting • ROTATING LOCK DESIGN: VILTROX EF-M1 Pro adapter with rotary lock buckle design makes it easy to lock the lens and prevent the lens from sliding or shaking during shooting. Weighing only 175.5g/6.2oz, it is easy to carry and doesn't add bulk to your camera • USB Firmware Upgrade: The USB Type-C firmware upgrade port can upgrade the EF-M1 Pro adapter for enhanced compatibility. Through continuous software updates, VILTROX will allow users to get a better shooting experience, fix product bugs, always adapt to new lenses, providing more lens and camera combinations