Attaching this adapter to an RF mount camera body enables the use of any lens in Canon’s rich EF & EF-S lens* line-up, thereby expanding the possibilities of the EOS R System.
*except EF-M and Cinema EOS lenses

Control Ring Mount Adapter EF-EOS R features an additional control ring that could be customised to control exposure settings; shutter speed, aperture, ISO and exposure compensation, effectively providing better control especially while shooting through the Electronic View Finder. The control ring has a tactile, easily distinguished surface and features a clicking mechanism that provides tangible feedback during adjustment.
*For those who prefers a silent control ring during photography or video recording, the clicking sensation and sound of the control ring can be removed at Canon authorised service centre (chargeable). Available from October 2018.