Use Canon EF and EF-S mount lenses on a Red Epic or Scarlet body with this aluminium Canon mount from Red. Allows aperture control through the camera brain, and allows the use of image stabilisation where present.
The Canon mount also has autofocus support, although it's not a feature that is widely used. These are not camcorders after all!
The following is a list of lenses supported by Scarlet and Epic firmware, although if a lens is not listed here it does not mean it will not work with this mount: