You'll seldom see the flexibility of viewfinder design in movie cameras in any other camera. One of the rare examples of a similar design would be found in half frame Olympus Pen-F, or Minolta auto 110, mainly because of their smaller format. Movie cameras have very interesting optical designs as well as servo diaphragm controls, and sophisticated film advance mechanisms. Arri SR camera, for example runs extremely quiet for its 16 mm format. There are several lens mounts incorporated for cine cameras: C-Mount, Arri Standard, PL Mount, etc.
