The Blackmagic Design Zoom Demand is an add-on accessory for the Blackmagic URSA Broadcast G2 Camera (B4), Blackmagic Studio Camera 4K Plus, and Pro models that allows for electronic zoom 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 Focus Demand, you’ll be able to daisy chain the devices together to leave a USB port open for external SSD recording.