Question

What pixel pitch do I need?

Pitch is chosen from the closest viewing distance, not the furthest. The closer people stand, the finer the pitch has to be.

The rule we use

A working rule for indoor walls is one millimetre of pitch for every metre of viewing distance, and slightly coarser outdoors where people stand further back. A five metre viewing distance points at a pitch around P5 or finer; a boardroom seat two metres from the wall points at fine pitch.

What changes the answer

Content decides as much as distance. Small text and data need a finer pitch than logo loops and video. Brightness, contrast and the colour of the content all shift the limit by a step.

Why we do not start from the pitch

The pitch is the outcome, not the input. Wall size, viewing distance and content are agreed first, then the pitch and the cabinet follow from them.