In a conference room the nearest viewer is usually the problem, not the furthest. The front row may sit 3 m from the screen while the back of the hall is 25 m away. The front row sets the pixel pitch, because that is where individual LEDs become visible; the back row sets the screen height, because everyone behind a tall delegate still has to see the lower third of a slide. The familiar rule of thumb is roughly 1 mm of pitch for every 1 m of comfortable viewing distance, so a wall that starts 3 m from the audience points at P2.5 to P3.91 rather than a fine pitch chosen for its own sake. Content sets the second decision. Presentation slides, financial tables, small legal text and lower-third graphics all need about one pitch step finer than pure video, because the eye is reading rather than watching. A screen that looks superb with a full-frame video loop can look soft the moment a spreadsheet is displayed on it.
When a screen appears on camera, two numbers matter more than most buyers expect. The first is refresh rate: a 1,920 Hz panel, and better still 3,840 Hz, keeps a camera from catching the dark scan bands that a low-refresh screen shows as horizontal stripes across the image. The second is grey scale behaviour at low brightness. On camera the screen usually sits beside a brightly lit stage, so a panel that dims smoothly and holds colour at 40 to 60 percent output photographs better than one running flat out, which blows out highlights and shifts colour. Ask the AV team what cameras and what shutter speed will be used; a short shutter such as 1/1000 second raises the refresh rate the screen needs.
| Room | Front row distance | Typical pitch | Notes |
|---|---|---|---|
| Boardroom, up to 30 seats | 2 m | P1.25 to P1.86 | Fine text, video calls, detailed charts |
| Hotel ballroom, around 300 seats | 4 m | P2.5 to P3.91 | The most common corporate rental size |
| Exhibition stand | 1.5 to 3 m | P1.5 to P2.9 | Visitors stand close and ambient light is high |
| Large hall, 1,000 seats or more | 8 m | P3.91 to P4.81 | Back rows need a taller screen more than a finer pitch |
A finished screen is always a whole number of cabinets. With 500 x 500 mm cabinets a 6 m x 3 m backdrop is exactly 12 cabinets wide by 6 high. With 640 x 480 mm cabinets the same target is a near fit and needs either a custom steel frame, a masked edge or a change of target size. Decide service access before the room layout is fixed: front-service cabinets can be mounted close to a wall with no rear clearance, while rear-service cabinets need roughly 600 to 800 mm behind them for a technician. In a low-ceiling ballroom, ground support or a mother grid usually replaces a flown truss, and every point load has to be confirmed with the venue. Because screen price varies with pitch, cabinet size, brightness and mounting method, the layout is normally settled first so the quotation matches what will be installed.
Send the screen size, the nearest and furthest viewing distance, whether the wall will be filmed and the destination country, and we will return a written quotation with the cabinet layout and a recommended pitch.
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