This EF-mount lens to Canon RF camera mount Octopus Adapter from DZOFilm allows you to use an EF-mount lens on a camera with a Canon RF mount, enabling you to use cinematic glass with a variety of cameras, and it maintains infinity focus. This durable lens support features stainless steel and aluminum construction, and its tight fit prevents any play or wiggle at any temperature. A 1/4"-20 thread allows you to add support for a longer lens. The lightweight adapter features internal flocking, which helps reduce internal reflections for a clean image.