Today, retail chains are full of all kinds of television sets that differ in manufacturer, design, size, technology used, technical specifications and price. Although each of the above parameters is considered very important, the search for a suitable option is best to start with the answer to a simple question: how to choose a TV diagonal so that watching TV programs is safe for the eyes and as comfortable as possible for a person.
The concept of the size and diagonal of the TV
Often in pursuit of the largest newfangled equipment, the buyer forgets about the importance of choosing the right TV for the size of the room. You must admit that a huge apparatus looks ridiculous in a small kitchen, and watching a movie on a small device in a huge living room will not be a pleasure. Thus, when choosing the size of the equipment, it is important to consider in which room it will be installed.
The first two digits of the marking of any TV indicate the size of the diagonal. This indicator is equal to the distance between opposite corners of the display. The generally accepted unit of measurement for this parameter is inch. This value is 2.54 centimeters. For example, the 2019 model of the UE-32K5500 from Samsung has a diagonal of 81.3 centimeters (32x2.54).
It is well known that the most convenient viewing is guaranteed by large displays. Size is one of the criteria that directly affects the cost of the TV: the larger the diagonal, the more expensive the purchase will cost. Thus, if the budget size and floor space allow, give preference to devices with a large screen.
The size of the TV and screen are two completely different concepts. The first value is usually larger than the second by the width of the frame. Currently, this difference is not so big, since the scope of modern TVs is getting narrower every year. The aspect ratio or aspect ratio is 16: 9. This figure is unchanged for the main part of televisions.
Features of choice
Recently, TVs with large screens have been very popular, and with each year their demand is growing. A feature of modern models is the narrowest frame, which allows to increase the useful area of the screen. Any viewer looking at such a display will certainly experience incredible sensations of complete immersion in the events taking place on the screen. However, the closer a person is to a large screen, the more difficult it is for eyes to grasp a picture.
The choice of TV depends entirely on the preferences of the buyer. Which device to prefer: liquid crystal, OLED or plasma. It’s not worth remembering the old picture tubes, because every year they are found less and less.
The most common are LCD screens. The peculiarity of such devices is that they are produced even with a small screen resolution. Fans of plasma should not forget that devices with a diagonal size of less than 50 inches do not reproduce the image in FullHD resolution.
So which TV to buy? Someone will like the option with a small screen size. Such devices do not catch the eye at all; they fit perfectly into the design of any room. Many people prefer to see huge, sometimes occupying a large part of the wall, devices in their apartment. However, if it’s illiterate to place even the most expensive fancy 55-inch model, the expected effect is unlikely to work out.
Buying a television receiver requires an individual approach, hasty and rash decisions in choosing this type of equipment are simply unacceptable.In order for the money to be spent not in vain, it is important to strike a balance between the screen size and the distance from the TV to the viewing point. Only a properly selected device will minimize eye strain, give the owner a sense of overall comfort and the clearest picture with all the expected special effects.
In order to avoid feelings of fatigue and discomfort, it is important to know how to choose the right diagonal of the TV depending on the distance. Earlier, in order to find a place for comfortable viewing of tube TVs, such simple calculations were performed: the screen size was multiplied by five. For example, the distance from the 40-inch TV to the sofa should be at least 2 meters.
The appearance of liquid crystal, plasma, and other ultramodern displays has made some adjustments to the calculation of this parameter. Today, choosing a TV for home, use a different formula, according to which the screen should be three times less than the optimal distance between the viewer and the device itself.
Calculation example: 40 inches x 2.54 cm x 3/100 = 3 m 05 cm.
Correlation table of distances and diagonals
| Diagonal inches | Range, meters |
| 17 | 1,5 |
| 25 | 2 |
| 32 | 2,5 |
| 37 | 2,7 |
| 40 | 3 |
| 50 | 4 |
| 55 | 4,5 |
| 80 | 6-7 |
Thus, if the buyer needs to choose a TV according to the size of the room, the table will save you from the necessary calculations. For example, a device with a diagonal of 40 inches should stand from the viewer at a distance of 3 meters, 50 inches - 4 meters. All these numbers are focused only on television sets with a minimum resolution of 720 x 576 pixels.
So, the choice of diagonal depends on:
- the distance from which it is planned to watch television programs;
- image resolution.
Before proceeding with the calculation of the distance for watching TV with high resolution, let us dwell on such an equally important indicator as the angle of view. Experts say that for complete immersion in the image on the screen, the optimal indicator of the angle of view should be 100 degrees (50 in both directions). In addition, with an increase in the angle, for example, to 60 degrees, the peripheral vision of a person is included in the formation of the picture. It is such an indicator that will give maximum pleasure from watching television programs.
Finally, the time has come when the more progressive resolution of HD and Full-HD is considered the most common. This means that a larger number of points are involved in the formation of the image, respectively, the image becomes more high-quality. Interestingly, an increase in resolution allows viewers to be located somewhat closer to the display, without being afraid of harmful radiation. New televisions, unlike old picture tubes, are considered completely harmless.
To be more precise, choose the diagonal of a high-resolution TV, experts recommend using special factors:
- 1280x720 pixels - 2.3;
- 1920x1080 pixels - 1.56;
- Ultra HD - 0.7.
The application of these coefficients is more convenient to consider with specific examples. In the first case, the viewer should be from the screen of a 40-inch TV at a distance of 2 meters 33 centimeters (40 x 2.54 x 2.3 / 100). In the second case, this figure will be 1 meter 58 centimeters (40 x 2.54 x 1.56 / 100). A comparison of the results shows the dependence of the diagonal size on the resolution of the TV.
Currently, the purchase of more modern equipment for watching high-resolution broadcasts requires a shorter distance between the television screen and the viewer. By the way, it is not necessary to independently carry out such calculations, because the Internet has a lot of ready-made graphs that recreate the relationship between the diagonal size, resolution and the distance between the TV and the viewer.
The size of the diagonals is conditionally divided into three categories:
- devices with screens up to 20 inches - a good solution for small rooms (for example, kitchens);
- TV receivers with a diagonal of up to 37 inches will fit well into rooms up to 18 square meters;
- 40-inch displays - for rooms with an area of over 20 sq.m.
If the financial condition allows, experts advise giving preference to large screens. Experience shows that a person quickly adapts to these sizes. After getting used to it, he even has a desire to change the old television set to an option with an even larger diagonal.
According to this formula, the 65th UHD should be a meter on behalf of