WHAT SHOULD YOU KNOW BEFORE BUYING A LED SCREEN?
GUIDE TO CHOOSE AND UNDERSTAND THE TECHNICAL PERFORMANCE OF A LED SCREEN
VIEWING DISTANCE FOR LED SCREENS
The viewing distance is an important value to define the interval between two possible pixels. For example, if we have a 3 x 2m screen, we can choose a pixel pitch of 10 mm if we want an optimal vision from 8 m away. But if we want to reduce its viewing distance, making it closer, then it’s better to choose a pixel pitch of 8 mm.
SO, IS IT ALWAYS BETTER TO GET THE SMALLER PIXEL PITCH?
Not really. Remember that smaller pitches are more expensive. If we take the previous example (3×2 m LED screen) and set 10 m viewing distance, the image quality will be the same, whether the pixel pitch is 10 mm or 8 mm. Choosing a smaller pixel when it is not necessary is a waste of money.
LED SCREEN BRIGHTNESS
Advertising LED screens have a higher brightness than LED TVs and other screens. Brightness is measured by using nits or candelas per m2. The higher the luminosity level, the higher the level of brightness.
Screens with higher brightness are pricier and use more electrical power. Hence, it is important to choose a screen with the right brightness for your needs, so you won’t pay more for something that is not necessary. Non-weatherproof indoor LED screens use LEDs with lower light output, but water-resistant outdoor LED screens need to use brighter LEDs.
HOW TO CHOOSE THE BEST PIXEL PITCH FOR A LED SCREEN
When buying a LED screen, doubts often arise. One of the most common is how to select the right pixel pitch. It is natural to want to get the best image quality. In fact, it is easy to find examples of bad pixel pitch choices: distorted images that cannot be perceived correctly at any distance.
Some people (and sellers) believe that distance from the screen is the only variable that matters to get the best image quality. They mistakenly calculate pixel pitch based only on this and do not think about the size of the LED screen.
As technical advice, the first thing you have to do is to calculate the total number of pixels that has the screen we want to buy. The amount cannot be less than 30.000 pixels.
HOW DO WE CALCULATE THE TOTAL NUMBER OF PIXELS ON A SCREEN?
Very simple: you can check how many pixels are in one square meter of each pitch in the following table.
For example, if we want a screen of 2×1 m, it’s necessary to convert the size into square meters, which is done multiplying the base measurement by the height measurement. The surface of a 2×1 m screen is 2 m2. Now, we have to look for a pixel pitch value that, after being multiplied by the surface size, gives us a value greater than 30,000 pixels. Let’s multiply the surface of our screen by the 10 mm pixel pitch (equivalent to 10.000 pixels/m2, according to the previous table). 2 m2 x 10.000 pixels/m2 = 20.000. Therefore, this value would not be valid for video: it would only be suitable for text viewing.
Probamos ahora con otra resolución en 8 mm (equivale a 15.625 píxeles/m2, según la tabla anterior). En este caso, 2 m2 x 15.625 píxeles/m2 = 31.250. Ahora sí obtenemos un valor válido para la reproducción de imágenes y vídeos. Si, aun así, tienes dudas respecto al pixelado que deseas, lo mejor es dejarse asesorar por profesionales con una larga experiencia, y con cientos de pantallas y proyectos realizados.If you still have doubts about the pixel pitch you would need, it is better to get professional advice from experts with a long experience and hundreds of successful projects.
INDOOR AND OUTDOOR LED SCREENS BRIGHTNESS
One of the most common misconceptions is related to the confusion between brightness and weather protection. This error is induced by dishonest sellers who offer expensive and excessive outdoor LED screens to customers who do not need them, just to get a higher commission. The deception consists in not informing that there are indoor screens with higher brightness, that can look as bright and sharp as outdoor screens.
These indoor LED screens do not have weather resistant features because they do not need it. This can save you a lot of money, because it makes the price of the screen much higher. The truth is that screen brightness is completely independent of its weather protection.
WHAT IS THE MAINTENANCE ACCESS OF LED SCREENS?
The maintenance access tells us where you can find and access the elements inside the screen.
Rear maintenance screens require a space behind the screen to get inside access. Sometimes, these screens can incorporate doors that must be fully operative to perform maintenance tasks. If you are installing a rear maintenance LED screen, be sure to leave the space necessary for staff access and door opening.
LED frontal maintenance screens are designed for wall installations or similar, where we will access their internal parts from the front. The frontal maintenance screens are slightly more expensive than those of the rear type, due to the mechanisms they integrate to grant a frontal access.
WHAT ARE THE BEST BRANDS OF LEDs FOR SCREENS?
Brand names are not a way to measure good quality, it is better to look for reliability. The reliability of a LED model is measured in rates per thousand. The higher rate per thousand, the better quality and reliability of the led.
FREQUENTLY ASKED QUESTIONS ABOUT INDOOR AND OUTDOOR LED SCREENS
I WANT TO INSTALL A LED SCREEN IN A SHOP WINDOW DISPLAY. WHAT KIND OF SCREEN DO I NEED?
Para colocar una pantalla en escaparate es importante valorar la luminosidad que incide sobre el. Puede escoger la luminosidad de su pantalla en función de la luz solar que reciba su escaparate. Si su escaparate recibe mucha luz directa del sol puede optar por pantallas de exterior que tienen valores de luminosidad muy elevados.
FOR WHICH USES AND LOCATIONS IS AN INDOOR LED SCREEN RECOMMENDED?
Indoor LED screens are a very good option for a large number of locations and uses. Its price and image quality make it a highly demanded product. It is an ideal product for a multitude of uses as long as the ambience luminosity of its location does not exceed the scope of its brightness performance (nits).
WHEN IS IT A GOOD IDEA TO PUT AN OUTDOOR SCREEN IN A SHOP WINDOW?
Indoor LED screens have lower brightness values than outdoor screens. Their attractive price and image quality make them attractive for a wide variety of locations, but for shop windows it is advisable to invest more and purchase outdoor screens to obtain the best image quality in high light conditions.
CAN AN INDOOR LED SCREEN WORK WELL IN A SHOP WINDOW?
Indoor LED screens can work in shop windows that do NOT have problems with direct ambient light. If the shop window receives direct sunlight, outdoor LED screens should be used.
WHAT IS THE REAL DIFFERENCE BETWEEN OUTDOOR AND INDOOR DISPLAYS?
On the one hand we have the environmental protection, the outdoor screens, as their name indicates, are adapted to withstand the most common outdoor environmental conditions. They have a higher weight than indoor screens and their luminosity is much higher than indoor screens because it is considered that they will be in areas exposed to direct sunlight. Logically, taking into account all these features, outdoor screens have a much higher price than indoor screens. Performance of outdoor screens and performance of indoor led screens.