Multiple cameras fixed on rigid frame — stereoscopy, parallel angles, or action cutaways in single take. Eliminates reshoots, locks timing consistency.
Mounting multiple cameras on a rigid mechanical construction means you record the same event from different angles simultaneously — without cumbersome repositioning. This not only saves shooting days but also guarantees absolutely identical timing between perspectives. Actors maintain their rhythm, objects move exactly the same: this is invaluable, especially for visual effects, stereoscopy, or action material.
Practical Everyday Applications: For 3D shoots, the multiple-camera rig is standard — the two or more cameras must be in an exact geometric constellation relative to each other to produce a consistent stereoscopic image later. But these rigs are also used for high-quality action sequences: a vehicle crash, an explosion, a complex stunt choreography — everything is captured from two, three, sometimes four angles simultaneously. The worst-case scenario is a crash that cannot be repeated; with a rig, you have the certainty of having multiple takes from different cameras in the bag without having to perform the stunt again.
The technical challenge lies in the construction itself. You need a steel structure that is vibration-free, precisely adjustable, yet light enough to be moved on standard cranes or stabilization systems. Each camera must be independently focusable — usually via follow-focus systems with separate pulls per camera. Monitor access for the focus puller also becomes tricky; often, one sits with four or five monitors side-by-side. Synchronization is critical: all cameras must run frame-accurately, timecode is distributed externally, and slating is done in parallel for all cameras.
In editing, such a rig offers enormous flexibility. You can cut between perspectives without losing performance continuity. Crossfades between cameras appear seamless, parallel editing arises quite naturally. For documentaries or multi-perspective narratives, this is a classic setup — think of concert recordings or talk shows, where multiple camera rigs capture audience and performers simultaneously.
An important note: A multiple-camera rig is not the same as a simple double-camera setup. A rig is structurally rigid, geometrically defined. Movements occur as a unit. This distinguishes it from the flexible use of separate cameras, where each can remain independently positionable — see also the terms synchronized cameras or stereoscopic rig.