How do I determine what content composition will look the best in stills and/or video? You always need to consider how many total pixels you have to work with. For example, you simply can’t display a recognizable close-up of a person’s face if you only have 2,500 pixels in your display. Consider that reproducing the eye by itself, which takes up 10 percent of the close up image, you’ll only have approximately 250 pixels to create the pupil, iris, white, eyelashes, eyelids and eyebrow. Remember that on an LED display, each pixel produces a single color so shaded areas require even more pixels to reproduce accurately. If you plan on showing people/models up close, you’ll need to increase the density of the LED pitch in your display or you will not be pleased with the results. It’s important to remember that smaller LED pitch means greater resolution, and that you always need to be selective with content based on the confines of your total pixel count.
How much power do I need to supply to an LED display? The general guideline for estimating a display’s maximum power requirement is to allocate approximately one-half (½) watt per pixel. If you have standard 20A 110V service available, you can deliver approximately 2,200 watts of power. This will limit your display to a maximum of 4,400 (2,200/.5) pixels, which, in a typical 4:3 ratio display, equals a 56x72 matrix of 4,032 pixels. This is not sufficient for anything but a small display with limited text and graphics capabilities. The 4x8-foot 8mm LED display referenced above with 51,200 total pixels would require a total of 25,600 watts.
In most cases, you will need to supply additional power to ensure proper operation by sufficiently powering your LED display. Power requirements should be included in the initial discussions with your LED supplier/reseller.