Canon EF-EOS R Drop In Filter Mount Adapter w/ Variable ND Filter (1.5-9 Stops)
Extending the range of compatible lenses, this Canon EF-EOS R Drop-In Filter Mount Adapter is a lens adapter designed for attaching any EF or EF-S-mount lens to the EOS R mirrorless digital camera. It offers compatibility with select A-type drop-in filters, and includes a variable neutral density filter for greater control over your exposure settings.
The adapter's design extends the ability to use filters with unique lenses that cannot accept filters on the front, and and it also retains full autofocus and the image stabilisation capabilities of the mounted lens. It is also dust and water resistant.