Blackmagic Zoom Demand

This professional lens control accessory is designed to deliver smooth, broadcast‑style zoom operation when working with compatible studio cameras and electronic photographic lenses. Mounted directly on tripod pan handles, it allows operators to control zoom precisely while keeping both hands in a natural operating position. This approach mirrors the ergonomics of traditional studio cameras, making it ideal for live productions where consistent framing and fluid camera movement are essential. 

The integrated zoom rocker is pressure sensitive, enabling slow, delicate adjustments or faster zoom moves depending on how firmly it is engaged. This makes it possible to follow presenters, performers or athletes smoothly without sudden changes in speed. Because zoom commands are sent electronically to the lens, motion remains controlled and repeatable, even during extended broadcasts or rehearsals. This greatly reduces the risk of visible jitter compared to operating the lens barrel by hand. 

Compatibility is focused on power zoom lenses with active Micro Four Thirds or EF mounts when used on supported Blackmagic studio cameras. Once connected via the camera’s expansion ports, the controller communicates directly with the lens electronics, giving responsive and reliable zoom control across the full focal range. This makes it particularly well suited for news, talk shows, conferences and educational productions where subjects frequently change position within the frame.

Beyond zoom operation, this controller features customizable buttons that expand its functionality. Depending on the camera model in use, these buttons can be assigned to tasks such as adjusting zoom speed, activating talkback or controlling built‑in neutral density filters on advanced studio models. This flexibility allows operators to tailor the controls to their specific workflow, reducing the need to reach for camera menus during live operation.

Installation is simple and robust. The supplied mounting hardware secures the unit firmly to standard tripod handles, ensuring it stays in position even during rapid camera moves. Once installed, the camera, lens and controls function as a single integrated system, delivering a polished studio experience while retaining the compact size and affordability of photographic lenses. When combined with a compatible focus controller, this solution completes a full lens control setup suitable for demanding live production environments.