The Blackmagic Design Focus Demand is a dedicated, hand-held remote control unit designed to provide precise, manual control over lens focus and iris for compatible Blackmagic Studio Cameras and URSA Broadcast cameras. It is part of Blackmagic's ecosystem for live production and broadcast studio environments, where smooth, repeatable lens control is essential for professional results. The Focus Demand connects to the camera via a standard 4-pin XLR cable (often used for broadcast lens control) and communicates using the Blackmagic URSA Lens Protocol. Its primary function is to give the camera operator or a dedicated focus puller intuitive, tactile control over these critical lens parameters without needing to touch the lens itself, which is especially valuable when cameras are mounted on tripods, pedestals, or in hard-to-reach positions.

The unit features a large, damped focus wheel that provides smooth and precise rotation for fine adjustments, along with a smaller iris wheel. It includes programmable buttons that can be set to execute common commands like one-touch auto-focus, recalling preset focus positions, or toggling between different control modes. An integrated OLED display shows critical information such as current focus distance, f-stop, and which camera/lens is being controlled. The ergonomic design is built for handheld use during extended productions. By offering this dedicated hardware interface, the Focus Demand significantly improves the workflow in multi-camera setups like news studios, live events, and sports broadcasts, where speed, accuracy, and reliability in focus pulling are non-negotiable.