I知 looking at potentially purchasing a set of Leica R or Contax Zeiss lenses. I would initially have the mounts converted to EF but I was wondering down the line when RF takes over EF as the standard Cinema EOS mount, will it be possible to convert these mounts to RF or will I have to use the EF to RF adapter? Just wondering if it is possible just so I know what I知 getting into with a set of Leica R or Contax Zeiss.