The Base Plate for Canon EOS R1 from Really Right Stuff is designed with anti-twist flanges to keep the mounted camera from twisting. Once the dovetail plate is on, quick release functionality has been added to the camera. This base plate is compatible with all Really Right Stuff clamps and most other Arca-type heads.

The CNC-machined 6061-T6 aluminum plate has a laser-engraved center mark on the back to align it on a head. The included hex key stores magnetically under the plate, and an option for an L-component is available that will fit the plate's modular design and make a custom-fit L-plate.