Pitch is one of main parameters when you select any LED video wall or LED video corner.
'Pitch P2.5' means the LED screen has 2.5 mm distance between each pixel (dot) center.
Less pitch value = less distance between pixels centers = more pixels on a screen = more density of pixels on same area = better picture quality.
And vice versa. Higher pitch value (e.g., P3.9, P5 etc) leads to bigger distance between pixels centers on a screen (each 3.9 or 5 mm etc), and you may start to see each pixel\dot separately as well black lines between them while you are standing at a certain distance from a screen.
Therefore, when you select any LED video screen or LED video backdrop you need to consider viewing distance to a screen in a way "closer viewers will stand on event - smaller pitch must be".
Here below are approximate distances recommendations:
Pitch | Distance (minimum to optimum) from eyes\camera to LED video wall
P2.5 | from 2.5 to 6 meters (from 8 to 20 feet)
P3.9 | from 4 to 9 meters (from 10 to 30 feet)
P4.8 | from 5 to 12 meters (from 16 to 40 feet)
Thus, LED video corner which we propose has smallest pitch on the market P2.5 what ensures high quality of video and photos taken, as well as good memories and emotions.
Another side is a price. Here there are 2 points.
1) LED video screen with smaller pitch has higher density of pixels on 1 m2, what allows to fit a video with a certain resolution (e.g., HD quality video of 1920 x 1080 pixels) within smaller physical dimensions of screen. In other words, LED screen with bigger pitch requires more meters to accommodate same video resolution, i.e. same quantity of pixels (approx. +50% between P2.5 and P3.9).
2) On another hand, smaller pitch is naturally more expensive per meter than bigger pitch due to more pixels on 1 m2. For instance P2.5 pitch screen has 60% higher resolution than P3.9 (60% more pixels on same area).
At the same time, you may hire LED video screens with bigger pitch (P3.9 or P4.8 or higher) which are cheaper per m2 if your event setup considers big viewing distance between viewers and a screen (from 4 to 9 meters and from 5 to 12 meters accordingly as indicated above). In such case, you don't need to overpay for a small pitch as you don't need small and high-resolution screens.