One of the longest standing industry secrets is that a camera body without a lens attached to it is as useless as a lens without a camera body attached to it. Many have wondered why such an attachment can’t simply be accomplished on its own, but then again it wouldn’t rightly be the film industry without a piece of gear that’s necessary to be able to use your other pieces of gear. 
 
Extending the range of compatible lenses, the Canon Control Ring Mount Adapter EF-EOS R is a unique lens adapter designed for attaching any EF or EF-S-mount lens to the EOS R mirrorless digital camera. This sophisticated adapter incorporates a customizable Control Ring, the same as that on native RF-mount lenses, for intuitively adjusting exposure settings, such as ISO, aperture, and exposure compensation. This ring provides tactile feedback when being turned, making it easy to recognize and control your settings adjustments. It also retains full autofocus and image stabilization capabilities and contains no optical components, thereby maintaining the original optical quality of the mounted lens. Additionally, it is dust and water-resistant, making it suitable for use in harsh weather conditions.