Features 1、Wide Compatibility: The auto focus adapter ring is compatible with EF EF‑S 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 reliable 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 reliable performance. Specification Item Type: Auto Focus Lens Converter Ring Material: Aluminum Alloy+Copper Focusing Mode: Auto Focus Applicable Lens: For EF Mount Lens Applicable Camera: For G Mount Camera, such as for GFX 50S, GFX 50R, GFX 100 Package List 1 x Autofocus Adapter Ring 1 x User Manual