The lightweight Canon Mount Adapter EF-EOS R simply allows you to make use of all your existing EF or EF-S-mount lenses on the brand-new Canon EOS R mirrorless digital camera. When making use of this Canon Adapter, there's absolutely no need to worry of losing full autofocus, as the adapter still retains it as well as image stabilization capabilities. Additionally, the Canon Adapter is also dust and water-resistant, fitting perfectly along the camera and lenses to perform in unforeseen weather conditions.