Canon EF (-S) to Canon RF adapter For EF / EF-S series lenses For EOS R series cameras Supports autofocus Functions are adjustable Supports EXIF information Can be upgraded via USB port Viltrox EF-R2 Canon EF (-S) - Canon RF Lens Mount Adapter With the Viltrox EF-R2 Canon EF (-S) - Canon RF Lens Mount Adapter, you can now also use your Canon EF (-S) lenses on RF mount cameras. The adapter has built-in contacts with which it supports autofocus. The functions of the adapter ring can be adjusted to your preferences and firmware can be updated via the USB port. Additionally, this ring supports EXIF information, so you always shoot well informed. The bayonet is made of silver plated pure copper and the ring is made of aluminum for durability.