Whenever there are televisions with panels with a larger diagonal and at cheaper prices, that is why for many users when we have to renew or update our old screen, it comes to us. mind when reviewing the catalog with the best models of the year, buying The largest TV that fits in the home, either in the living room cabinet or directly hung on the wall.

It will undoubtedly provide us with a most spectacular image, but since we do not always have a room as large as those which appear in decoration magazines or in manufacturers’ advertisements, installing a giant television in a tiny room can have a series of physiological disturbances of inconvenience that weigh on us in the long term.

Therefore, brands and experts recommend that we consider a series of aspects regarding viewing distances and diagonal screen sizes before buying our ideal model, so that it adapts to the size of the room where we are going to install it. to our usual position as spectators within it.

Health problems linked to too large a television

On previous occasions we have commented on how experts recommend considering an optimal viewing angle of 30 degrees to try and reduce the so-called “tennis match” effect or problem.

What distance would then be optimal? Well, the general rule is that the minimum viewing distance is three times the height of the TV or 1.6 times the diagonal of a 16:9 screen.

So for distances less than 2 meters a size up to 50 inches would be advised, 55 inches is reserved for distances of 2.1 meters, 65 inches is advised for around 2.5 meters and if one wants to put 75 or more inches, we should have at least 2.9 meters of distance between the screen and our usual position in the room.

Recommended viewing distances based on diagonal

If we do not follow these considerations and finally opt for a model that is too large, we can in the long run suffer various inconveniences that will degrade our user experience and even our health. First, there’s something called visual fatigue due to not covering the entire screen at a glance.

In other words, we have to constantly move our heads from side to side to see all sections of the image on the screen. It is a nuisance that we will suffer depending on the use that we will give to the TV. For example, if we want him to watch movies for only a few hours in a row, the fatigue will be minimal, but if we are in front of the screen all day, it can cause serious discomfort.

This is the case, for example, of those who use a television or monitor that is too large for their viewing distance when gaming frequently and for long periods of time, and may suffer from eye and muscle discomfort caused by a fixed posture. in which only a few muscles need to be constantly in motion to cover the entire surface of the panel.

Not being able to cover the entire screen at a glance can eventually cause discomfort in the muscles of the neck and back as well as over-accommodation in the eyes, which according to some medical specialists can lead to symptoms such as itching or blurred vision which logically worsen with the time of screen use.

In addition, a large television will generally be brighter than a small one, since it has a larger emitting surface and manufacturers reserve the most advanced technologies capable of emitting more nits for their high-end models. larger diagonals.

This is an ideal feature if we want to use it during the day in a room with lots of ambient light, but if we want to do viewings in a room with little lighting and/or in the evening have a huge TV very bright can become counterproductive.

If we’re going to be watching TV for many hours, having a direct light source aimed at us that’s so big, powerful (although the light intensity can still be dimmed to a point) and relatively so close , may cause discomfort. and eye fatigue.

Therefore, if our objective is to watch television at night for long periods of time, it is advisable to have an ambient light that diffuses the impact of direct light and reduces eye fatigue.

As we can see, the idea of ​​mounting a giant screen at home is limited not only by the resolution that we can observe and the pixels that we can take advantage of, but it is also closely related to the space available in the room. . as well as the distance at which one will “usually” sit to view the content. But it is precisely this “usually” that gives us the hope of not having to give up having a real home cinema.

And it is that the physical problems caused by the presence of such a large television in the living room are generally insignificant if we only look at the screen for short periods of time, such as the duration of a movie or a few episodes of a series. .

Future Solutions: Resizable Image

It may seem then that there is no solution, that the size of our living room, beyond its physical dimensions, determines with the optimal viewing distance the size of the television that we can install if we do not don’t want to go through all that inconvenience. No options?

Well yes there are. For example, it is possible to implement what could be called “resizable image” in televisions, an option that can be offered both at the hardware and software level.

In the first case (hardware implementation), we have already seen some attempts by brands such as LG with their rollable TV that allows various panel positions, hiding parts of the TV that we do not use and thus achieving various screen sizes by pressing a single button.

We have also seen other designs and prototypes with panels that are hidden and only reveal part of the total screen to offer different functions or the latest LG Art model presented a few months ago. The disadvantage of these hardware solutions is their price and that they require furniture that hides the rest of the panel.

The other option is the implementation by software and the idea would be to be able to have an image that can occupy the whole panel available as always when we go to see a cinema session or an episode of our favorite series with the best possible quality, but which can also be configured to occupy a smaller area, for example half, a third, a quarter or different proportions.

It’s kind of like a PiP or PbP or inverted zoom function where the video source is scaled down to a corner, side, or middle of the screen, but this time with only one video source, the one we see at this time, leaving the rest in black and, if possible, integrated into the remote control with a specific key to activate and modify the options of the function.

With this function we can buy a screen with a large diagonal and adjust the image size to our liking depending on the type of content that we are going to see. For example, if on a daily basis we only use television to watch the news, contests, talk shows or similar events that do not require a large diagonal or maximum resolution, but rather a small reference with sound for take a quick look once in a while where, one can vary the size and turn an 80 inch TV into a 40 inch picture.

This function would also allow considerable energy savings in models with self-illuminating pixel technologies such as OLEDs or in LCD-LEDs which can control and turn off their rear lighting independently according to certain matrices.