Worked room example: suppose a team is planning a corporate general session in a hypothetical room 90 feet deep and 60 feet wide, with a 36-foot-wide by 18-foot-deep stage. The inputs below are illustrative. They do not describe a Space City Pro project, establish a standard package, or replace venue review and a system test.
Record the room, audience, camera, and content inputs
| Input | Illustrative value | Why it matters |
|---|---|---|
| Room and stage | 90 ft deep by 60 ft wide room; 36 ft wide by 18 ft deep stage | Sets the available stage zone and the locations that need sightline review. |
| Audience | Closest seated viewer 14 ft from the wall plane; farthest viewer 72 ft away; side seating extends 25 ft from center | Creates several viewing conditions instead of one average distance. |
| Cameras | Center camera at 48 ft; side camera at 32 ft; mobile camera may approach the stage edge | Defines the positions and angles for image tests. |
| Intended shots | Wide stage, dual-presenter, presenter medium, and presenter close-up with the wall in frame | Shows when wall texture, scan behavior, or scaling could become visible. |
| Content | 16:9 master deck and video delivered at 3840 by 2160 pixels | Gives the content team a known source canvas. |
| Known venue constraint | Maximum proposed display zone 26 ft wide by 15 ft high, pending the venue and structural plan | Creates a boundary without assuming it is approved. |
Show the candidate wall arithmetic
For this exercise, test a nominal 24-foot-wide canvas. Matching a 16:9 source gives an illustrative height of 24 × 9 ÷ 16 = 13.5 feet. The nominal display area is 24 × 13.5 = 324 square feet. Its shape is 24 ÷ 13.5 = 1.78, which aligns closely with the source ratio of 16 ÷ 9 = 1.78.
This arithmetic creates a candidate, not a purchase specification. Actual cabinet dimensions may produce a slightly different physical size and mapped pixel canvas. The supplier still needs to show the buildable cabinet count, exact dimensions, native mapped pixels, scaling method, content safe area, and any unused pixels.
Test the candidate from each critical position
The 14-foot closest audience position, the far side seating, and the 72-foot rear position each ask a different question. The closest viewer can reveal panel texture and fine content behavior. The rear and side positions test legibility, composition, blocked views, and whether essential information sits safely within the visible canvas.
The camera plan adds another set of checks. The center and side cameras need representative lenses and framing, while the mobile camera needs its closest planned position defined. Test the presenter medium and close-up with the actual wall content behind the subject. The wall can pass the audience review and still need a different panel, processor setting, shot, or lighting balance for camera.
Shortlist pixel pitch for a comparative test
Suppose inventory review identifies buildable 2.6 mm and 3.9 mm candidates in the required cabinet geometry. Do not select one from a distance formula. Put both through the same closest-viewer content check and, where practical, the same camera and processor test.
The comparison should use fine text, brand marks, gradients, motion, live camera inserts, and the intended lighting conditions. Record whether either candidate shows visible pixel structure, moiré, scan artifacts, scaling issues, color limitations, or exposure conflicts in a critical audience or camera view. The broader LED planning decision sequence explains how that test fits the complete system.
Check structure, venue, and service space
The nominal 24 by 13.5-foot canvas fits inside the illustrative 26 by 15-foot display zone on paper. That leaves 2 feet of total horizontal difference and 1.5 feet of total vertical difference, but those numbers are not clearances. Structure, bases or rigging hardware, trim, cable paths, stage edge distance, fire and egress requirements, and service access still have to fit.
Ask the venue and qualified structural and rigging parties to confirm the permitted support approach, load path, approved points or floor conditions, power and cable route, schedule, and any review documents. Coordinate the wall with scenic, lighting, audio, cameras, and presenter movement. A cabinet count that fits the drawing can still fail the room.
Carry open questions into the system test
The worked room example produces a 24 by 13.5-foot candidate and a two-product pitch shortlist. It does not determine the final panel, cabinet layout, mapped resolution, processor, structure, brightness setting, power plan, camera settings, or commercial scope.
- Cabinet layout: What exact dimensions and pixel canvas can the available product build?
- Content: How will 3840 by 2160 assets be mapped, scaled, and protected by safe areas?
- Viewing: Do fine text and image detail work at the closest, farthest, and side positions?
- Cameras: Do the intended lenses and shots reveal moiré, scan behavior, or exposure conflicts?
- Environment: Can the proposed wall balance with the room and stage lighting across the program?
- Build: Are structure, loads, power, access, cable paths, service space, and schedule approved?
- Operations: What is monitored, what is backed up, and who owns the response to a fault?
Turn the actual floor plan into a candidate and a test list.
Use the room, stage, audience, camera, content, and venue data to show how the candidate was derived and which conditions still need proof in the system test.