The body of the CAnon EOS-1D X Mark II weighs approx. 1340g. Even with the lens, you should not exceed the limit of 2.2kg. The dimensions of the camera should not be a problem, as Feiyu has designed the mount quite generously. The height and depth are practically unlimited, while Feiyu orientated the width on common DSLRs. A Canon EOS-5D, which is identical in width, fits on it. If the joint on the right of the camera is too narrow, you can also rotate the setup so that the joint is on the left of the camera.