Blackmagic Design Focus Demand Bundle with Fastening Cable Ties and Lens Cleaning WipesBlackmagic Design Focus Demand The Focus Demand helps get accurate focus control with Blackmagic Studio Cameras. It eliminates the need to reach for the lens because you can control the lens direct from the tripod handles, just like a true broadcast lens. The focus demand can be added to turn affordable photography lenses into amazing broadcast lenses! The unit has USBC connections so it works with all Blackmagic Studio Camera 4K models. Each unit