Feature:1. Wide Compatibility: The auto focus adapter ring is compatible with EF EFS series lenses for GFX cameras, featuring automatic focusing and adjustable aperture.2. Metal Construction: The adapter ring is made of aluminum alloy and copper with a gold plated copper electronic contact point, ensuring dependable information transmission and adjustable aperture.3. Firmware Version 2.03: Equipped with a USB upgrade interface, the adapter ring supports firmware updates for enhanced performance and compatibility.4. Anti Reflection Coating: Internal anti glare treatment prevents reflections from affecting image quality, while the ergonomic release key allows for quick lens removal.5. Sturdy Design: The adapter ring features a metal body with electroplated surface treatment, delivering durability and longevity for dependable performance.Specification:Item Type: Auto Focus Lens Converter RingMaterial: Aluminum Alloy+CopperFocusing Mode: Auto FocusApplicable Lens: For EF Mount LensApplicable Camera: For G Mount Camera, such as for GFX 50S, GFX 50R, GFX 100.Package List:1 x Autofocus Adapter Ring1 x User Manual