Robotic motion-control arm with haptic feedback for VFX — operator steers live motor movement, then automates playback perfectly. Essential for complex compositing and multi-pass work.
Haptic Arm
In a motion control setup, the cinematographer or focus puller sits in front of an arm that feels like a real camera crane or jib — but every movement is captured, stored, and reproduced by the motor with millimeter precision. This is the Haptic Arm system: a robotic hybrid arm with force feedback that allows organic, hand-controlled movements to be automated and repeated identically any number of times. The difference from pure motion control: You feel the resistance, the inertia, the physical load — just like when operating real equipment.
In practice, it works like this: The operator guides the arm manually, while the electronics capture every position, rotation, and speed. Afterwards, the control loads this movement curve, and the motor automatically reproduces it — but the physical feedback remains active. This means that if an object later enters the frame or the lighting changes, you can make fine adjustments without ruining the entire take. The force feedback is crucial here: it prevents jerky movements, gives the arm weight, and makes the control intuitive rather than abstract.
Where it is used on set: VFX-heavy shots with multiple layers — for example, when the same camera move is performed twice with different lighting or objects, or when compositing elements need to be inserted in post-production that require exact camera tracking data. In green screen productions with complex rig removal work, calibration effort is also saved if the movement is reproducible with millimeter precision. The disadvantage: setup and calibration cost time and money. Jerky, creative hand movements are harder to improvise than with a real crane.
Related to classic motion control and technical camera operation, the Haptic Arm differs in its manageability during the first pass — it is closer to real operator work, less mechanically abstract. With good training: a cinematographer working with it for the first time must understand that smooth, continuous movements are more easily recordable than hasty cuts. The feedback helps in developing this feel.