Distance to TV 55 inches. Distance from eyes to the TV. However, to watch and see what you need

Choose TV - Not the most ordinary event in life. Let us leave aside the preferences in brands and type of TV, these are the topics of other articles. Let's see how the screen size affects the distance to the TV from which we will watch.

Of course, very important is the possibility of placing a TV in a particular room from the point of view of the free space and designer features of the room. We also omit these parameters and do a purely scientific approach, given the peculiarities of the visual perception of a person.

The basis of the selection we will put the most correct and most impressive perception of the movie, which depends on the distance to the TV.

Cinema viewing angle

The angle of view and the distance to the TV

Angle of view 40 ° -45 °

Angle of view in the ideal case Must be symmetrical and to have a value in the range of 40-45 degrees. In the cinema, depending on the size of the visual hall, the size of the screen has a certain meaning. Peripheral vision The most susceptible to movement, while direct vision is focused on the definition of perception, which is why peripheral vision is responsible for realistic perception of virtual reality of cinema.

The most realistic perception of kinocarten occurs when the viewer is located in the VIP zone, which is usually in 2/3 distances from the screen.

With such parameters, the most optimally works human vision - used both central vision and peripheral.

Inspection of peripheral vision when watching TV (or unnecessary perceptions of their home environment) significantly reduces the emotional impression of the cinema.

According to the requirements of Dolby Labs to cinemas, the horizontal angle of view on the last row of the cinema should not be less than 31 degrees and no more than 60 degrees in the first row. Setting an angle parameter of 45 degrees can be compiled as a table:

Angle of view 35 °

It turns out that when diagonally in Z2 inches, the distance to the TV should be 85 centimeters? By and large - yes. But in the cinema, the viewing angles are applied to Format 1: 2.35. In such a format, most films for film rolling are removed. The TV also has a format of 16: 9 or speaking "cinema" language 1: 1.78. What to do? Will have to transfer from the beginning of the VIP zone a little away, on its last row, where horizontal the angle of view is 35 degrees.

We make calculations in this sense:

So we got the optimal distance viewing of the 16: 9 TV. It seems everything is clear. But the TV is not a cinema, the picture has a completely different resolution. And there are Full HD TVs, and there is HD Ready.

Vision angle 32 °

From the physiology of the human body, it is known that the acuity of vision at a normal person is equal to an average 1 angular minute, that is, 1/60 share of degrees. If the angle between two visible points is less than this value, then they will merge if more than this value, we will see them separately (discrete). So, so that we are clear enough to perceive the picture, but it did not crumble into separate pixels, we need to see in 1 degree of angular view of 60 points (pixels).

Multiply 60 points per 35 degrees and get 2100 points. But Full HD TV has only 1920 points horizontally! Therefore, TV manufacturers transplanted us from the VIP zone even further, almost the last row. 1920 points correspond to 32 degrees of angular vision.

Once again, we recline our table:

31 ° angle

This distance corresponds to the threshold value when the perception of the person's eye is on the verge of the integrity of the picture and its possible pixelization. Small our movement and everything, the brain caught the graininess and noticed the artifacts of image details. It is necessary to transfer away, alas, on the last number of our virtual cinema, where viewing angle is 31 degrees.

Now we got exactly optimal viewing distancewhich will get the cinema sensations, provided that you have a Full HD TV and the film you are looking, has exactly Full HD (1920x1080) permission. But you will have about as much impressions as much as the last row of the Cinema Dolby Labs certified for the requirements of Dolby Labs.

Features selection distance view

What about HD Ready TVs? Alas, but they will not provide a "cinema" impression. The maximum angle for viewing a clear picture is 21 degrees (divide 1280 to 60). However, you can transfer closer, at the recommended distance and try to not pay attention to the noticeable pixelization of the image. If it will move further, then the picture will be perceived organically, clearly, detailed, but the peripheral vision of your eyes will not be involved. Consequently, perceive the film as it is perceived in the cinema, it will be simply impossible.

Understanding all this income, some manufacturers start the release of televisions, "sharpened" precisely under the film format. For example, Philips Cinema TV has a 21: 9 aspect ratio. Using cinematic parameters, the screen format is 1: 2.37, and its resolution is 2560 to 1080 points. What angle of view does it provide? Dividing 2560 to 60, we obtain 42.7 degrees of the angular horizontal view. The perfect parameter for the best place in the VIP zone of the cinema hall!

Of course, the TV is bought not only to watch movies. There are news, educational, entertainment, sports programs, ... yes a lot of things. And here should not adhere to the above recommendations. In this case, other criteria play a decisive role, sometimes subjective.

But if you are a kinean, or build a home theater oriented mainly to view high-quality films, select the screen size and distance distance correctly. You want to get the strong sensations from the film, as in a good cinema.

And do not forget the recommendations of the famous film director George Lucas, who said that half of the film's impression is good sound. Do not limit yourself only with a high-quality image, a multichannel sound with a magnificent picture will take you long hours of pleasure from the magical world of movies. Even if you are watching movies where the main parameter is the storyline, then a good video and sound row will significantly strengthen emotional impressions.

The distance to the TV directly depends on the diagonal and type of display. A few years ago, hardly anyone asked the remoteness of the device from a sofa or bed, but today, when the size of the homework reaches impressive dimensions, the question becomes relevant. Many buyers want to acquire the most large TV, which can be entered into the situation. To view was comfortable for a long time, did not harm the vision of adults or children, the distance from the eyes to the center of the screen should be correctly selected, depending on the resolution and size of the diagonal of the TV in inches.

Naturally, there are no rigorous framework on this score, there are only some rules and recommendations, on which removal it is necessary to watch TV. It was previously assumed that the distance from the screen to the eye should be equal three - four diagonals. So, if the diagonal is 32 inches (80 cm), then the person must be at a distance of 2.4 - 3.2 m, and the larger indicator is permissible to increase slightly. The range allows you to choose the most convenient position.

Such calculations of the correct distance from the person to the TV screen lay down to use kinescopic TV Taking into account their diagonal. Rounded or flat monitors quickly tired eyes and were deprived of any progressive technologies. The same refers to TVs with a resolution of up to 720p. Modern plasma or LCD displays have higher parameters.

Flat screens do not create glare, and high-quality picture does not cause quick eye overwork.

Plasma has similar characteristics with LCD TVs and in terms of removal from the viewer, the installation of the panel is no different. Projectors, in turn, allow you to adjust the size of the screen, but about the image plane will have to take care in advance.

Formulas for calculating the optimal distance

Comfortable viewing directly depends on the size of the diagonal of the TV panel and the remoteness of the audience from the large screen. The more Teleker, the further the viewer needs to be located. It is important that the image falls in full in sight an image and sounded sound.

To determine the optimal location of the screen, some rules have been developed.

1. For the home screen, the angle of view of a person must put in the limits of 36-70 °. According to tX Recommendations, When operating a home theater, the optimal viewer involvement in what is happening the viewer ensures the angle of review of 40 °. Based on this value, the remoteness of places from the screen is calculated, taking into account the length of the diagonal of the TV panel. To view the content on the panels with a diagonal of 60 - 90 inches, the viewer needs to be placed on the removal from the screen of about 2.4 -2.74 meters.
2. Based on sMPTE standard From the society of film engineers and television lies a fixed viewing angle of 30 °. With a guide to this regulation, a 65-70 inches diagonal screen should be about 2.74 meters.
3. Cnet calculation formula Regulates the safe distance of the viewer from the screen. The distance must be no less values \u200b\u200bequal to 1.5 diagonals of the TV panel. For a TV dimension of 72 inches, the viewing distance should be 2.74 meters.

Important remark! All 3 standards regulate security and comfort of viewing content in the home theater. Television LCD panels are less tired by the human vision due to the high parameters of the viewing angle and lack of glare. Therefore, a distance for the TV defined according to the rules of THX, SMPTE and CNET can be reduced to 1.7 meters.

What give a person the same technologies? Their use has brought TVs to a new level. Today, the resolution of 4k confidently conquers the market, even 8k televisions appear. Such definition standards allow you to consider the image from a very close distance, with no pixel noticeably - only clear and most realistic picture. Accordingly, the recommendations for viewing TV 4k take into account this fact and make some adjustments to the rules discussed above.

TVs permissionFULLHD orUHD 4K (both flat and curved) allow you to significantly reduce the distance viewing to a minimum and fully immerse yourself in the atmosphere of the film or the game. Thus, the device with a screen diagonal more than 32 inches well will fit into a small room. For greater specifics, you can bring a small summary table, in which the manufacturers of televisions indicate, from what distance you can watch their braids without a load on the eyes.

In the first case, the diagonal size varies with 1.6, and in the second - by 0.8. Thus, it is easy to calculate optimal distance For the panel of any size. For example, with a 32 inches diagonal, the indicators will be 1.3 and 0.7 m, respectively.

It's important to know! To view the 3D television, the same calculations are used, and for projectors you need to adjust the diagonal based on the removal of the plane to output the image from the person.

Precautions

The latest technologies have improved the matrices and allow you to remove excessive stress to the eyes, even if you see several films in a row, the user's condition does not deteriorate to a large extent. But it is impossible to forget that when viewing involved and the cervical spine. Several important items can be allocated, based on the recommendations of medical professionals.

1. A too close distance provokes the load on the muscles and joints, which is difficult to control with a passionate view.
2. The remote location will have a negative impact on the spine, as well as on the eyes, forcing it to look after each part.
3. Installing TV, it is important to take into account not only the distance on which it can be viewed, but also height, tilt angle.
4. Medical standards do not recommend watching TV longer than 1.5-2 hours adults, 1-1.5 hours of adolescents, and preschoolers are allowed to spend a TV for up to 15 minutes a day.

In conclusion, we can conclude that it is the diagonal that determines the optimal distance from which the TV is permissible. Simple calculations will help to correctly navigate when choosing a new model or redevelopment of the room. It is worth remembering that modern models can be fixed on the wall using various brackets, thus adjusting their position and viewing angle.

The leading manufacturers of television receivers make everything possible to satisfy the taste of even the most biased and capricious consumer. Any techniques are going to move: bringing to perfection of already implemented technologies with simultaneous search for new, designer finds, minimization or maximizing sizes. But something to the buyer needs to be done independently - it is to choose a diagonal of the TV. From what distance the viewer will enjoy the favorite transmissions, not only the feeling of comfort, but also the health of his eyes.

TV difference and diagonal

What is a television diagonal is the distance from the upper left corner of the screen to the right lower, which is measured in inches (2.54 cm). When it says a diagonal, it meant the pure scoreboard showing the image - without an external frame located around the screen.

Interesting! The diagonal of the first color screen is 7 inches. And the last modern model with a curved display, it reaches 100 units.

But when, a mentioned diagonal, they mean the length along with the edging around the screen, actually refers to the size of the TV. In the former times, the kinescope (the current display) was placed in a wooden box. At the dawn of domestic television, this case exceeded your screen 2-3 times Due to bulky nodes and details included in the television scheme of the time.

The latest models of TVs released recently also have a housing. Very often it can be compared with the picture frame (due to the designer solution to place TV on the wall of the room). In such modern models, the amount of edging to such an extent is that when they talk about the size of the TV, often mean screen width and height.

But the word size mentioned with the diagonal may designate the area of \u200b\u200bthe room in which the television receiver is collected. These concepts are inextricably linked with each other for reasons that are described below.

Criteria for choosing a diagonal

Speaking about the diversity of diagonals, we will keep in mind only those models that are available today. For the convenience of perception, current offers will be shown in the table immediately with the translation of inches in centimeters.

Inches	19	22	26	32	37	40	42	46	50	55	60	65	75
Cm	48	55	60	81	93	101	106	116	127	139	152	165	190

Tip! It is possible to understand which diagonal at the model, one by one name. 2 The first digits in the labeling of the TV indicate its size.

On the one hand, the greatest pleasure can be obtained if you browse the movie on the big screen. Therefore, many people attend cinemas and strive to repeat this feeling of the house, acquiring the TV books with the biggest diagonal. However, this rash solution can not only bring discomfort during home view, but also to significantly harm the organs of vision. Since when choosing the optimal diagonal should be repelled from the square of the roomin which the TV is purchased. But in fact, in order to correctly select TV to the room, you need to take into account many factors.

By type of TV

Kinescoppy devices working on the principle of the electron beam tube (CRT)have already fully developed its technology. But you can still buy them. For reference it is necessary to say that the smallest models with a diagonal of 10 inches in the old days were considered portable and took them on the road. Viewing this screen can not be called comfortable, so models used in standard apartments, starting from 14-15 inches, but the devices 20-25 inches were mainly bought. And the largest device was considered in 29 inches.

Projection unitsbasically perform the function of home theaters. They can only be called televisions at a time when the image is projected to the screen, which is immediately located in the general case of the device. The dimensions of the diagonal in such devices begin with 32 inches.

At the time of buying plasma panels It should be remembered that the display is less than 42 inches no longer transmit good image quality to resolve Full HD. And for innovation in 4k and above, a diagonal will be required much larger.

LCD TVs - These are the most sought-after TV devices today. Among LED models, you can find all the dimensions of the diagonals presented in the table above. And among the samples using LCD technology, 17-inch products are additionally produced for especially small kitchens or children.

In 2015, on sale came televisions made using OLED technology With the highest pixel resolution, but the screen has a curved form. And although such an appearance was dictated by revolutionary technologies, TV data did not become popular among consumers. Manufacturers had to return the usual flat design. It must be said that for the technology OLED kitchen models do not. Such TVs require special premises.

Tip! For the smallest diagonal of 55 inches OLED TV size is enough of the standard living room. Distance from one wall to another backdrop enough for a comfortable viewing from such a screen.

By distance

Perhaps this is the most important criterion. In order not to get myopia and cover the entire screen, you need to calculate the safe distance from the display to the viewer. Experts say that the optimal length should be at least three diagonals. Telephone device.

But not to make calculations, ready-made tables with data are available.

It can be seen from the table that for a distance of 3 meters, you need a diagonal of 25-26 inches. But there is another very important condition, thanks to which you can significantly reduce the distance - this is the resolution of the screen.

By screen resolution

The table above contains the maximum parameters for the minimum resolution of 720 x 576 pixels. It is necessary to recall that under the screen resolution, the number of points placed on this area implies. The more points (pixels) accommodates the segment, the higher the quality At the image.

Important! A dynamic picture with high quality can be viewed with a smaller distance without fear that it will break. At the same time, such a view will not adversely affect vision.

So, with the most popular high-quality solution of Full HD in the 1920x1080 RRI on a diagonal of 32 inches, you can comfortably view television programs from a distance of 1.2 - 1.5 meters instead of the previously stated 4. And for lovers, everything is scrupulously calculated, the table below shows the formulas. with special coefficients for them.

Common resolution	Factors
1280x720.	2,3
1920x1080.	1,56
Ultra HD.	0,7

So, if you use a calculator for calculating (32 inches x 2.54 (inches coefficient in cm) x 1,56 (screen resolution coefficient) / 100), then you can very accurately calculate the minimum distance from the viewer to the TV screen. In our case, to view the TV shows on a 32-inch display, you can be from it no closer than 1 meter and 26 centimeters.

According to Gabaritam

This parameter is used to decide whether the TV is needed a separate stand, and how close it can be moved to the wall. Under the dimensions imply the thickness of the teletechnics, that is, the distance from the surface of the screen to the rear wall of the case. With each new model this the parameter decreases, and samples created by the latest technologies, you can simply hang onto the wall as a picture.

By Square

In order for the TV to choose the size of the room in which it will stand, you need to take into account the distance parameter from televishes to the viewing site, the calculations of which were given above. In general, this dependence is due to the small area of \u200b\u200bour kitchen premises, in which the TV with a large diagonal will be impractical and harmful to health.

Tip! Telepersons are selected for small kitchens, the size of the screen of which does not exceed 19 inches. In this case, you can even save on the screen resolution: with such a small size too high the parameter will be simply useless.

And on a more spacious kitchen, you can accommodate with 32 diagonal wall brackets. But in this case it is necessary to take care of a higher screen resolutionTo protect your eyes from tension.

On the corner of the review

Even the budget televisions in the technical documents indicate the viewing angle of 160-170 degrees.. However, this is often not true. With this requirement, there are no problems with only plasma panels that are optimal for viewing is an angle of 120 degrees that can be observed while being directly in front of the screen.

Of course, deviations in the position of the observer on the parties are possible before the appearance of noticeable distortions in the image. Therefore, the installation of the television receptionist is of great importance, depending on the number of viewers, so that the viewing angle allows everyone without exception to family members and their guests browse the movie in good quality.

On the setting of the room

In our apartments there are more often situations when they are not moving to the TV, but on the contrary - the receiver must be moved away from the chair or sofa, since the furniture (within the framework of the interior already established) is firmly in its places, and we are not able to redevelop. Therefore, it is often necessary to choose a diagonal at a well-known distance from the sofa to the very long point in the room.

Table optimal diagonal depending on the distance to viewers

Summing up the information obtained, it can be concluded that two main factors will help to choose the right diagonal - knowing the exact distance from the TV to the viewer and the selected advance extension of the future screen.

Since few people have the opportunity to provide a separate room for a home theater, then the buyer needs to simply measure the distance from the viewing place before the selected point where the display will be. Further, based on the finished finance, decide on the future screen resolution. Knowing these two parameters for sure, it is possible to determine which diagonal to be needed for a comfortable viewing of the TV program.

Pixels and inches	32 "	37 "	40 "	42 "	fifty"	52 "
625 (SD)	2.5 M.	3.1 M.	3.3 M.	3.4 M.	4 M.	4.2 M.
720 (Simple HD)	1.9 M.	2.2 M.	2.4 M.	2.5 M.	3m	3.1 M.
1080 (Full HD)	1.3 M.	1.5 M.	1.6 M.	1.7 M.	2 M.	2.2 M.
2160 (Ultra HD)	0.8 M.	0.9 M.	1m	1.2 M.	1.5 M.	1.7 M.

Happy owners of large-sized apartments can continue this table for themselves, using the formula and coefficients shown above.

Education price

A variety of factors will affect the price of the TV. A significant role is played by the brand. But basically the cost of the television is determined by the following parameters:

• for which technology it works;
• what is its screen resolution;
• diagonal.

Therefore, pushing away from the diagonal and considering all other factors, the television can be bought at the following prices:

• tVs with a diagonal of 20 inches cost from 6 to 70 thousand rubles;
• devices in 30-40 "pull from 10 to 227 thousand rubles;
• the aggregates in 60-70 will cost from 150 thousand rubles, and their ceiling price can reach 1.5 million rubles;
• the exclusive model made by the latest developments and having a diagonal of 100 inches will be estimated at about 4.5 million rubles.

Manufacturers have tried to cover all social segments of the population. The ability to purchase a TV for home has every resident of our planet. And according to the contents of your wallet, anyone will choose a model, most of all meets all the requirements of the room in which this TV will delight its owners.

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When going to buy a TV, the user decides for itself a few important things relative to its characteristics. One of the most important is the size of the diagonal screen. This parameter significantly depends the comfort of viewing of television and video programs, and it should be given priority. Having a TV with an optimal screens diagonal size can be counted that the perception of the program being viewed will be the best. How to determine which diagonal should be in your case, and at what distance to watch the TV is best?

Experts and experienced users agree that exact indications of this, of course, no and much depends on the preferences of a particular user. But there are certain recommendations that should be adhered to. When choosing, it is important to pay attention not only to the recommendation, but also to take the basis of the choice of common sense, which can be a valuable adviser.

With materials sanctifying this topic, it is better to read in advance. Do not blindly trust sellers consultants. They can in favor of the benefit of the store advise to buy exactly the model that is more profitable to sell. Having your knowledge, you can show sellers that you understand the selection of consumer electronics, which will undoubtedly cause respect and will not allow you to mislead you.

Determine the diagonal, based on the size of the room

First of all, you need to decide on how to buy, with a room where the TV will be installed. At the same time, the size of the diagonal must properly relate to the size of the room.

There are people who are in pursuit of fashion buy a super-modern TV with a huge diagonal, but put it in the room very small sizes. No less rarely observed diametrically opposite picture when a relatively small 32 inches TV is installed in the large hall. And in the first, and in the second case, comfort will not be provided.

The thing is that with an increase in the linear size of the room, the distance to the screen increases. Naturally, the more it, the more on the larger screen it will be, not straining vision, watch programs.

So at what distance to watch the TV is best?

Based on the preferences of a large number of users, among which surveys were conducted, it is possible to establish that the most comfortable human eye considers the distance determined as 3 to 4 diagonals of the TV receiver screen. In this case, the user's vision does not suffer and the quality of viewing does not deteriorate, and the picture is not distorted.

The choice of the diagonal size is influenced by the resolution TV

At what distance to watch the TV is needed not only on the basis of the size of the diagonal, but also pushing out from the resolution parameters of the device screen. This is the fundamental characteristic of the quality of the picture, which is determined as the maximum possible number of pixels derived from the area of \u200b\u200bthe screen area.

Modern high-resolution television receivers allow comfortable viewing at a smaller distance, and on the screens with a small resolution with a decrease in the distance to the user's eye, the picture loses the pixels in the quality and in the image elements. It makes viewing extremely uncomfortable. Consequently, the only solution to the viewing is to increase the distance to the TV.

We are calculated

Often, looking in the cabin model and bought it, after installation in my room, the user turns out to be disappointed. To prevent such a scenario, you need to take into account both ways to choose a diagonal. Thereby learn how to apply both these techniques yourself in order not to be confused when it comes to choosing a specific model.

So, it is supposed to buy a 40 inches TV with a resolution of 1080p (Full HD). Using a special table, it can be understood that the optimal viewing, taking into account all the recommendations, will be 1.6 meters.

In addition to the tables, there is a specialized calculator in the form of an application. Having entered its field parameters for the resolution of the screen of the TV book and the size of it is diagonally, it is possible to get a value of the best from all points of view to the screen from the eye.

Having learned how to quickly navigate or remembering several values \u200b\u200bfor the most sought-after diagonals and permits, you can safely go to choose a TV, being in full confidence that this choice will be correct.

Good luck shopping!

One of the main indicators when choosing a TV is the size of the diagonal. To determine this parameter, first of all, it is necessary to proceed from the distance from which the TV is intended to be viewed, as well as from its screen resolution. In detail about all the principles and nuances of the selection of the diagonal of the TV, you can learn more.

What is this scale?

The world standard for measuring the size of the screen is accepted as a diagonal. This is the distance between the diametrically opposite corners of the TV, which do not have a common party. To measure the diagonal, such a measure of length is used as an inch (inch) or 2.54 centimeters, which is indicated by the dual stroke sign. To find out the size of the diagonal in centimeters, you need to multiply a digit to 2.54.

As a rule, the screen size is present in the title of the TV model and goes immediately after the alphabetic index. For example, SAMSUNG UE-65HU8700. In this case, 65 is a screen diagonal. This system helps to quickly navigate the Ocean of the names of different models and manufacturers.

In fact, the size of the diagonal affects the aspect ratio, that is, the ratio of the width of the image to its height. Currently, the ubiquitous standard has become the ratio of 16: 9 or the so-called "home cinema". In old TVs, it was 4: 3. Visually see how the screen diagonal depends on the proportion of the width and height of the sides, in the following image:

The specified dimensions relate only to the part of the front side, on which the image is visible. The framing frame is not measured, because in most modern TVs it is quite thin.

Basic selection criteria

There are two key parameters that will help choose the correct television diagonal:

Distance from Screen to Viewer

Before buying a TV, you need to determine the future place of its location, and then measure the distance from the screen to the viewer. From the figures received and it is necessary to repel when choosing a diagonal on the basis of such a principle: the resulting distance should be larger than the screen diagonally 3-4 times. This is the optimal ratio to make it easy to crumble the entire image, and not only part of it, as well as to reduce the danger of the development of myopia.

Manufacturers also came to help buyers, having coordinated and releasing a special scale of the distance from the picture to the viewer. It can be represented in the form of graphs or charts. The numbers can even be somewhat different from each other, which is associated with roundings and translating from inches to meters. With an example of a table, you can find further:

Distance from the screen to the viewer (in meters, m)	Screen diagonal (in inches)
	17
2
	32
2,7
	40
4
	55
5,3
	65
6

From the table, it can be seen that when the screen from the screen, to the viewer, 1 m should choose a TV with a diagonal of 17 inches (43 cm), and at a distance of 6 m, the optimal diagonal will be the screen from 70 inches (178 cm).

TV resolution

This parameter shows how many pixels (points) are available on the screen. It has been established that what is more than them, the more detailed image, so if the TV has a greater extension, it can be viewed with a lower distance.

A few years ago, to select the optimal diagonal, it was supposed to divide the distance from the viewer to the screen to the coefficient 3 or 4. The formula remains correct for old models that support the resolution of SD (720x576) and are able to qualitatively process the auction television and standard DVD signals. After their active displacement from the market with new models, the estimated formula changed somewhat, namely, a special coefficient was adjusted:

• for HD Ready (768 × 1366) - 2.2;
• for Full HD (1080 × 1920) - 1.56;
• for Ultra HD (3840 × 2160) - 0.7.

The correction of the coefficient is due to the fact that the resolution of large-pointed screens has increased several times, which allowed the viewer to reconcile closer to the screen. Since new matrices do not produce harmful radiation, the human health does not suffer.

To accurately deal with the calculation formula, you can consider the following examples:

• You need to install a Full HD TV at a distance of 2.5 m from the viewer. To select the optimal diagonal, you need to be remotely divided into a coefficient corresponding to the resolution. Thus, this formula is obtained - 250: 1.56 \u003d 160 cm. Next remains to translate the resulting result in inches - 160: 2.54 \u003d 63. It turns out that the optimal diagonal of the Full HD TV is 60 "or 65".
• A TV for a living room is required for a family of 3 people with the ability to view movies in 3D-format at a distance of 3 m. For these purposes, the optimal choice is a resolution TV is not worse than HD Ready. So, two calculations are produced - 300: 2.2 \u003d 136 cm and 136: 2.56 \u003d 53 inches. It turns out that you can purchase a rather running for home theater diagonal in 52.

To make sure that the calculations are performed correctly, you can use the finished diagram, which reflects the dependence of the TV diagonal from the screen resolution and the optimal viewing distance:

In general, it can be noted that from a distance of 1.5 m approximately equally, pictures on the screen of 80-inch Ultra HD TV, 40-inch Full HD and 25-inch HD Ready will look. But if the value of the latter begins with 200 dollars, the cost of Ultra HD can reach several tens of thousands. So, more budget and appropriate selection will be TVs optimal diagonal HD Ready or Full HD.

To select the optimal model in each case, you also need to proceed from the room type in which it will be installed. Depending on this, manufacturers give certain recommendations with which you can find further.

For the living room

As a rule, it is necessary to install a TV for home viewing with the largest diagonal, because the image on this screen is as much as possible by the viewer. Based on this, experts give such additional recommendations:

• To select the optimal diagonal of Full HD TV, it is worth carrying out this calculation - multiply the distance from the TV to the sofa to 25. For example, the distance from the screen to the sofa is 3 m. It is necessary to carry out such calculations - 3x25 \u003d 75. It turns out that in this case it is worth choosing a TV Full HD with a diagonal of 75 inches.
• Select UHD TV (Ultra HD), if you allow finance, because they are characterized by higher quality and image details. In this case, to calculate the optimal diagonal you need to multiply the distance from the screen to the sofa to 39.

It is worth noting that LED or LCD screens are gaining increasingly popular, becoming actually standard for home video, but with a close distance, all their flaws are revealed in the form of "loops", quickly moving around the screen of objects, and insufficient contrast due to the lack of pure black .

For bedrooms

If it is supposed to watch TV in bed with a lying position, it is worth paying attention to the screens with a diagonal from 22 to 32 inches. At the same time, you can adhere to the same calculation principles as for the living room.

For kitchen

The kitchen is a room with an aggressive medium susceptible to high humidity and temperatures, so you need to choose electronics with the maximum durable case, which has good protection against random splashes of fat and water. As a rule, such requirements are answered by models of television with a diagonal of 16 to 26 inches. To accurately choose the rule should be taken into account:

• if the kitchen is small - up to 10 square meters. m., you can safely choose TVs with a diagonal of 16-19 inches;
• if the kitchen area ranges from 10 to 15 square meters. m., models of screens diagonal at 22-26 inches are suitable.

When choosing a diagonal of a TV for a large kitchen or apartment-studio, you can be guided by the general recommendations given above.

Viewing angle for easy viewing

From a combination of parameters such as a screen diagonal, its resolution and the viewing distance depends on the "presence" effect of the viewer. In fact, he indicates how the person is immersed in what is happening on the screen. This effect is determined by peripheral vision, which depends on the angle of the screen view, that is, how far as far as the viewer can sit and enjoy the good quality of the image.

Many modern manufacturers assure that their models have an angle of view in 176-180 degrees. This means that theoretically good picture will be displayed from any angle. In fact, not everything is so unequivocal and depends on the type of matrix, which is especially important when choosing a device for the living room, where it often involves watching the TV with the whole family.

So, it is worthwhile to take the features of the viewing angle depending on the expansion:

• LCD TVs (So LED) with flat display. Such a technology guarantees a high quality image, but when viewing at a large angle, the contrast level changes significantly. Since in many cases monitors are installed at eye level, have to worry about horizontal coal. If you plan to install the TV above the fireplace or on the wall, it is worth considering the vertical angle of review. A good output from the situation may be inclined wall mounts that allow minimize the negative consequences caused by a large viewing angle.
• Plasma. Unlike previous models, plasma displays guarantee a real viewing angle of 170 degrees, which is an excellent indicator, and the quality of the picture and the contrast does not suffer.

To accurately estimate the viewing angle, when buying a TV, it is worth viewing the displayed display from different angles.

Selection nuances based on the viewing goal

• To view movies in high quality and 3D format. It is best to search for the device with the highest possible diagonal and an appropriate stuffing. At the same time, the number of points per inch may not have a great effect on the choice, but the color parameters, contrast and delay time become priority.
• For games on a computer or console. In this case, on the contrary, it takes not the largest diagonal, as it means a small distance to the monitor, and the most affordable resolution, and the instantaneous shift of the picture.
• To view the TV shows in standard formats. For this, the smallest televisions will be acceptable. Even LCD-TV is perfect for this purpose - high permission is not required, a small delay in the image shift is not critical, contrast and chromium are retreating into the background.

Before purchasing a specific model, you should arrange a "test drive" - \u200b\u200bin the store to watch the video at different distances from the screen. If the review from the desired distance is good, the TV can be bought. So, you can accurately make sure the accuracy of the calculations that were previously produced at home.

Video: Selection of the diagonal of the TV

We offer a short video in which it is clearly demonstrated which diagonal of the TV is optimal for rooms of different areas:

A huge plasma squeezed into a small room is just a ridicule, like a small monitor in a huge living room. In order not to encounter such problems, you need to carefully approach the choice of the diagonal of the TV. Of course, the TV purchase targets will play a big role, and recommendations on the right choice will not be mistaken even with the most limited financial capabilities.

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