Watch as Steve and Jens discuss the features of the Z-Drive, direct drive follow focus and the Tornado. The Z-Drive is a direct drive, no gear follow focus. When you pair the Tornado with the Z-Drive you get a mechanical handgrip follow focus.
Canon EOS 5D Mark III User Group Channel
Because the functionality and information is limited at Vimeo Channels like this, there's much more to see and do at the associated User Group, canonhd.info, and videos added to the Channel should (and hopefully will) also always be added there.