Connect your EF or EF-S lens to the EOS R camera with this specially designed adapter. This EF-EOS R Mount Adapter comes with variable neutral density filter – ND effect can be adjusted from ND 2.5 to ND 500 equivalent – reducing the amount of light entering the camera*. Great for filmmakers wanting to shoot at large apertures and landscape photographers shooting at long shutter speeds. Canon EOS R adapters are weather-sealed against dust and moisture, ready to be used on location.