Setup, Compatibility & Care
To install the ER-i eyecup, align it with the tracks on the EOS R1 viewfinder and slide it into place until it clicks securely. To remove it, simply slide the old unit upward out of the locking grooves. To maintain the eyecup, clean it periodically using a soft, lint-free cloth or a gentle brush to remove dust and debris. If the rubber becomes heavily soiled, you can wipe it down with a slightly damp cloth using mild soap, but ensure it is completely dry before reattaching it to the camera to prevent moisture buildup in the viewfinder optics.