Canon Drop-in Circular Polariser Filter for EF-EOS R Adapter
A drop-in circular polariser filter for the Canon EF-EOS R filter mount adapter. This allows you to add a Circular polarising filter to any of your existing EF/EF-S lenses, meaning you can play wit the saturation and colour of your shot aswell as getting rid of any unwanted reflections on such things as water surfaces or car windows.