This Ultima 35 kit is designed for the Canon EOS 20D (sold separately). A battery grip (not included) must be mounted on the 20D. The battery grip holds batteries that power the camera and the battery grip allows camera mounting to the horizontal mounting plate(included).
The 20D functions as the capture device and the Ultima 35 system (sold separately) is hardware that swings, tilts and shifts, both laterally and vertically, for critical focusing.
