The Sony SKCPB40 Power Booster Unit for PMW-F55 4K Live Camera System is an optional accessory of the 4K live camera System. It allows you to use your PMW-F55 4K live camera system with an optional large box-type lens, such as is often used in sports production, by providing a way to power the lenses servos.
Supplies power to a compativle, but not included, 2/3" type boxed lens.
Used with the comnbination of PMW-F55 and the CA-4000