Camera Cage 15mm Baseplate is a height adjustable baseplate attachment used to set 15mm rods (sold separately, like Manfrotto MVA520W-1) at the correct distance from the center of the camera lens. Used with rods, it allows to mount accessories such as follow focus (MVA511FF), lens support (MVA514W), matte box, servo motors and more.
It fits Camera Cage Small (MVCCS) and Medium (MVCCM). The baseplate is compatible with the Large model (MVCCL) as well, which provides a dovetail clamp and rear rods.