I thought I said everything about the Virtual Pixel technology on LED giant screens, but today I realized I didnt.

I forgot to mention a side-effect that Virtual Pixel has, regardless of the technology used (geometrical/squared or Interpolated).

Basically, LED giant screens are perfect (well, no all of them...!) to show images and videos. But due to the virtual pixel, they have some problems in showing letter and numbers.

I understand it might look strange. You are probably asking, how come that such a technologically advanced equipment has a problem with the most basic alphanumerical signs?

Well, I guess we could compare these problems to those that a Formula One car (say a Ferrari) might have in driving on a normal street.

So why giant screens with virtual pixel can not show perfect numbers and letters? Simply because by visualizing a pixel that doesnt physically exist (the virtual one), the screens "smooth the edges" of each adiacent pixel (please note this is an extreme way to summarize what really happens: our technicians would kill me if I said that in front of them!). Such effect greatly improve the quality of videos and sliding pictures, where images are moving.

But "smoothing the edges" is not a good thing for text, because then it is perceived as blurry.

Is it so terrible? No dont worry. From a certain distance you will not notice any difference (remember the human eye cant notice small details at long distances).

But when designing an Ad, I always recommend my Customers to use BIG letters (usually at least 1/3 of the screen in size).

Oh, there are a few more things you should keep in mind, but I dont have time to mention them all now... So I'll keep the Advertising Design Tips for giant screens, for the next post. See ya!