Sequential numbering of camera shots — organizes the shooting schedule and post-production workflow.
Technical Details
The standard numbering system follows an alphanumeric structure: Scene Number + Letter for each Setup (1A, 1B, 1C). For complex multi-camera setups, additional designations are used (1A1, 1A2 for different cameras). Digital productions integrate the Setup Number into the metadata of video files with timecode synchronization. Script Supervisors maintain a detailed setup list in parallel, including lens focal length, aperture, and camera position. For IMAX productions, Setup Numbers are additionally marked with frame rate specifications (24fps/48fps).
History & Development
Irving Thalberg introduced the systematic Setup Numbering system at MGM in 1932 to control production costs on "Grand Hotel." By 1950, all major studios had standardized this method. With the introduction of Video Assist in 1976, Setup Numbers were electronically recorded for the first time. Digital production systems like AVID ScriptSync began integrating automatic setup recognition via timecode data in 2003. Modern cloud-based systems have enabled real-time synchronization between set and post-production since 2018.
Practical Application in Film
Christopher Nolan's "Dunkirk" (2017) used a dual numbering system for 65mm IMAX and 35mm shots with separate setup sequences (I-1A, I-1B vs. S-1A, S-1B). In Marvel productions, Setup Numbers are linked with VFX plates, allowing for precise coordination of over 3,000 shots per film. Documentaries use continuous setup numbering across multiple shooting days to reconstruct chronological sequences during editing. The series "Game of Thrones" developed a location-based system (KL-47A for King's Landing, WF-23B for Winterfell).
Comparison & Alternatives
Setup Numbers differ from Scene Numbers in their technical granularity – a scene can contain 15-20 different setups. Take Numbers denote multiple repetitions of the same setup (47A-Take 3). Modern alternatives such as timecode-based referencing are replacing traditional Setup Numbers in live streaming productions. AI-powered systems analyze image content and automatically generate Setup IDs based on camera position and image composition.