Choosing an LED screen is not a trivial matter. With this election, not alone at stake the success or failure of the outdoor advertising ( outdoor advertising ) of a business, but also the reputation of the company and, ultimately, everything related to branding and brand image. In order not to compromise these aspects, it is essential to ask yourself the following questions: how to choose the pixelation of an LED screen correctly? What should be taken into account to choose the type of LED screen that meets our needs?
So that you always succeed in buying your LED screen or LED light signs , today we bring you notions and aspects that you must have in mind. Pay attention!
What are pixels and how are they measured?
Before going into the tips on how to choose the pixelation of an LED screen, it is necessary to know what pixels are. For starters, note that the word pixel or pixel is the acronym for the English concept picture element ( “pixel”) and consists of the smallest homogeneous surface of all that make up an image, which is defined by its brightness and color . Thus, pixels are what makes possible the existence of digital images of all kinds, be they photographs or video frames.
To visualize the pixels, it is enough to enlarge a certain digital image until we appreciate the tiny rectangles of various colors that compose it (remember that all digital images are formed as a rectangular matrix of pixels!).
Each pixel on an LED screen lights up with a certain color to form the image. This hue is obtained by combining the stadium advertising boards three basic colors, or RGB, that is, red, green, and blue, in various proportions. And those colors, in turn, are obtained by mixing colored dots. Thus, a pixel is made up of several points.
After these clarifications, it is important that you know what dot pitch is . In this case, it is the diagonal distance between two neighboring points of the same color (and that are not two pixels). The smaller this distance, the greater the sharpness of the image , since it determines the minimum size of a detail that an LED screen can offer. This should be at least 0.28 mm, although it can also be measured in dots per inch (dpi). In Anglo-Saxon countries, the unit of measurement is dpi ( dots per inch ).
Thus, the resolution of an 800 x 600 LED screen will be 72 dpi, and on a 1,024 x 768, 93 dpi. And what is resolution? Basically, it’s about the number of pixels per inch it contains (1 inch equals 2.54 cm). For example, if we have an LED panel whose maximum resolution is 1,024 x 768 dots, it can display up to 768 horizontal lines of 1,024 pixels each. The higher the pixel density per line, the higher the image quality . Having many pixels equals fewer empty spaces between pixels and pixels, so the sharpness will be greater.
How to choose the right pixelation for an LED monitor?
To choose an optimal LED screen resolution, you must remember that the more points this LED monitor has, the higher the quality of the image. Of course: the higher the number of pixels, the more expensive the screen will be . Therefore, to find the ideal balance between good visibility and a competitive price when purchasing your LED screen, the following aspects must be very clear:
• Location of the monitor – whether it is an indoor or outdoor LED screen – to determine the protection it must have (anti-vandalism, anti-rain, etc.)
• Placement height of the LED display and if it will be accessible from behind
• Minimum viewing distance
With these three variables, you can choose the LED screens or luminous signs that best suit your business. For example, if the monitor has a viewing distance of more than 20 m, there is no point in acquiring a high-resolution LED screen, since the recipients of the digital advertising you broadcast will not be able to appreciate this quality. Instead, we will have to invest more in the viewing quality of the LED screen in the case that, due to the location of it, we are interested in viewing for a distance of 3 m, for example.
At this point, it is worth remembering that some users and vendors of LED screens mistakenly believe that, to visualize them well, only the distance at which the LED monitor is going to be seen influences. Therefore, they calculate the pixelation exclusively from the distance, ignoring the size of the monitor. Avoid falling into the trap!
A golden rule when choosing the pixelation of an LED screen is to calculate the total number of pixels that the screen you want to acquire has, an amount that should never be less than 30,000 pixels.
The procedure is very simple: for example, if we want a 3 x 1 m screen , we will change the size to square meters, multiplying the base by the height . In this case, we would have a 3m 2 LED screen . Next, we would have to look for a pixelated that, multiplying the number of pixels by m 2 , would give us a value equal to or above the 30,000 pixels mentioned above.
For example, we will multiply the surface by the 10 mm pixel (equivalent to 10,000 pixels / m 2 , according to this table to calculate the pixels of an LED screen ). Therefore, 3 m 2 x 10,000 pixels / m 2 = 30,000, so we would reach the recommended minimum number of pixels for the reproduction of images and videos.