[IT168 information] Many ordinary consumers have seen a variety of tables recommending the best distance, size correspondence when purchasing LCD TVs, such as the following:

This is just one of many versions but there are two tables with very large distances. Why? The reason is that Table 1 is a DVD-quality source, cable TV non-HD signal for 480P or 576P, and Table 2 is for Blu-ray disc or 1080P full HD signal, and the current domestic cable TV HD channel signal can also be slightly better than the 1080P signal and then slightly away point reference.

Even if the above two LCD TVs recommended viewing distance table with the rapid advancement of technology are actually somewhat out of date, that time is still the highest 1080P resolution, the largest size of 65 吋 it, in recent years, domestic 4K TV has become a popular trend, the maximum size of 120吋 Even higher, 8K TVs, 200-inch TVs have already appeared, and 4K video is not only used to test decoding capabilities and demonstrations in the early years. With the maturity of the H.265 compression technology, 4K chip source network transmission conditions are already in place. Buy a 4K TV now. Consider the perfect 4K video source in the future. What is the new recommended viewing distance?

Here we must first talk about what is the recommended viewing distance, first of all because now LCD TVs are basically 16:9, and human eye structure restrictions, we have a range of perspectives, recommended viewing distance to ensure that horizontal and vertical viewing angles can cover TV screen:

Through this range of perspective, it can be calculated that the suitable TV size under the sight distance of 3 meters is less than 85 feet, that is to say, the 3 meters line-of-sight distance (most of the family living room TV sight distance is between 2.5 meters and 3.5 meters) exceeds 85 feet. TV viewers will not be able to see the full range of perspectives (Yu Guang naturally cannot see things clearly). However, 40-85 TVs have many specifications. Due to panel source and cost considerations, a large number of manufacturers have pushed 55 baht before, and even printed on the flyers to promote the home living room 55 baht is the best size, in fact, are all sales The size of the main force only, in fact 4K resolution in the end of the 3 meters line of sight what size is the most appropriate?

Let's first look at the picture below:

Can't seem to see any obvious difference? This is the difference between 4K and 1080P sources on a 50-inch 4K TV 3 meters viewing distance, because the distance is large, the screen is small, even if the resolution is enough but not enough to see the details, leading to In fact, 1080P TV and 4K TV broadcast 1080P film source or 4K film source visual difference is almost undetectable.

Then look at the following picture:

It can be clearly seen that as the viewing distance reaches within 1.5 meters, the difference between 4K and 1080P sources on the 4K TV starts very clearly. Because of the lack of resolution and the non-point-to-point playback in 4K TVs, 1080P must be blurred.

50 吋 4K TV 4K film source to see the best viewing distance of less than 1.5 meters, we can not sit in the middle of the living room to watch TV? 55 吋 is also not much difference, in fact, even the 1080P source 55 吋 for 3 meters is still small sight. Here are some authoritative suggestions:

1. The video and audio certification company THX has released a formula for the placement distance of 1080P high-definition TVs, dividing the TV size by 0.84 (eg 50-inch TV, 50/0.84 = 59.5 inches, approximately 1.5 meters)

2. The best viewing distance of the 4K TV provided by the TV giant Sony is 1.5 times TV height, which is equivalent to half of the 1080P recommended viewing distance, that is, roughly 1 meter is the critical value of the 50-inch 4K TV resolution.

3, a European and American commonly used display device viewing distance formula: the best viewing distance (unit: cm) = screen height ÷ vertical resolution × 3400, the introduction of 50-inch screen height 1550px and 4K vertical resolution 2160 can be obtained 97.59cm is also 1 meter about.

4. HDTV (1080P) corresponding size distance table given by WiKi-Optimum:

5,Rings.com, a professional television evaluation and evaluation website worldwide, gives the full range of 20-100 inch, DVD to 4K quality matching distance table:

In summary, the best viewing distance of 50吋1080P is actually about 1.5 meters, while the best viewing distance of 50吋4K is about 1 meter. In reality, we cannot watch television so close, so 4K TVs can be used in ordinary living rooms. If there is more than 3 meters of sight distance, you can choose according to the principle that the bigger the 85 degrees, the better.

Taking into account the current 4K video is not yet popular, mainly for the best line of sight of 1080P film source both the 4K TV interpolation display and the popularity of the future 4K video resources to specific recommendations:

Small size, sight distance of about 1.5 meters, 4K TV 50 inches

Mid-sized apartment, 2.5-3.5 meters in viewing distance, 4K TV 65-85 inches

Large-sized apartment, luxury home, sight distance of more than 4 meters, 85 feet to start, economic ability to allow 100-120 feet or higher.

Bedroom TV If you often see 1080P source or even 4K video, then in fact about 2 meters long bed plus aisle, generally home sight distance is also about 2 meters 5 or even farther, 4K large-screen TV popularity, the bedroom hangs 40-50 TV has also been OUT, and conditions can also be considered directly in place on the wall 60 or 65-inch 4K TV.

If you are a general apartment with 3-4 meters of viewing distance in the living room, 2.5 meters viewing distance in the bedroom, then the living room to buy 70 吋 4K TV, bedroom purchase 60 吋 4K TV is a good big-screen solution, double 11 during the flagship Shop unprecedented event 13,999 yuan to buy Sharp's latest split 70 吋 10 generation line wide color gamut screen TV to send the same paragraph 60 吋 TV activity is very good value, recommend it.

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August 24, 2021