The Blackmagic Design Focus Demand is an add-on accessory for the Blackmagic PYXIS 6K – L-Mount, PYXIS 6K – EF, PYXIS 6K – PL, Studio Camera 4K Plus, Studio Camera 4K Pro, and URSA Broadcast G2 (B4), that allows for electronic focus control of compatible servo lenses via the camera’s USB Type C ports. The rental includes a tripod handle clamp, and if you’re also renting a Blackmagic Design Zoom Demand, you’ll be able to daisy chain the devices together to leave a USB port open for external SSD recording.