As we already discussed in our guide to choose the perfect LED displays, there are many characteristics to be considered and the grayscale is an important one. In this way, buying the right indoor or outdoor LED should be a methodical process that forces you to learn all the aspects, information and features that are not so well known.
There are countless factors that are unknown to many people, such as its operation or the grayscale that we will address in this article. Not only is it a configuration of the LED screen, but also an aspect that has a direct impact on the display.
What is a grayscale?
It is a scale belonging to the science of colors. This range of gray tones covers a range of variable tones located between black and white. In general, a scale of five values is used beyond the basic one that divides the tones into white, gray, and black. Logically, black does not reflect any light, but absorbs all spectra, while white – a lighter hue – transmits all wavelengths and is the result of the combination of all the colors that overlap each other.
The grayscale is part of an achromatic scale, that is, a continuous modulation from white to black. The grayscale has its importance when it is used to compare the luminosity value of pure colors and the clarity degree of each pure color graduations. For the comparison of the grayscale (test scale), the different positions that the different pure colors reach in terms of luminosity are highlighted.
Beyond this grayscale, there are 256 different tones that start from white and end in black. Surely, you are already wondering how does this grayscale influence a LED screen?
Grayscale and LED displays
The rule is simple: the higher the number of bits in the grayscale, the higher image quality the indoor or outdoor LED will have. Thus, it is important to look for screens with the highest number of bits so that the image improves and is richer in detail.
However, having a display with only high grayscale does not guarantee superior image quality. This happens because the grayscale depends to a large extent on the digital conversion system that the LED screen has. In addition, other factors such as the video processing chip, the memory and the transmission system that vary according to each modular screen come into operation. If all these factors are adequate, they will support higher bits in the grayscale, thus improving the level of detail of the content reflected on the screens.
Two types of LED displays according to grayscale
Both indoor and outdoor LED Wall typically use 13-bit grayscale. This number of bits is enough to display good quality images both inside a church, a shopping center, and a shop, as well as on outdoor screens located at a height or exposed to sunlight and ambient light.
There are other special screens that need to reflect more levels of detail and images or videos with constant and precise degradation of tones. In this case, a LED with a higher number of bits (14 or more) will be required to satisfy the need and show the details accurately.
In conclusion, understanding the grayscale in detail allows us to identify which is the right LED screen for each need. In addition, by understanding how this scale works to improve the content of the screen, you will be closer to buying a LED screen without errors and with the best image quality.