Back-Bone Adapter Canon EOS to C-Mount 5" outer diameter

5" outer diameter

there really is no limit to the number of uses you’ll find for the RAM Tough-Ball™

Adjustable arms allow for ultra-compact mounting

and it's also made with breathable materials that further add to the comfort aspect

The RAM-B-108BU accommodates rails from 1

Back-Bone Adapter Canon EOS to C-Mount 5" outer diameterConnect your favorite manual Canon EF lenses to your Ribcage with this EOS to C Mount adapter. Fully automatic lenses can also be connected but please note that there is no electrical connection via C Mount, so auto focus and iris settings will not function. Fully automatic EOS lenses default to having the iris wide open when used with this adapter. 35mm (full frame) lenses will experience a crop factor of 5. 7 with the Ribcage.