In many televisions, the best viewing distance for TVs of different sizes is often given in the product introduction, but their reference significance is not significant. For example, the recommended viewing distance of Xiaomi's recommended 65-70 inches is 2.2-4.2 meters. This distance can be satisfied in most living room environments. In addition, it also prompts “This distance is the recommended viewing distance. In actual viewing, the larger the TV size, the better The better," said it plainly or bought it directly.
The TV viewing distance given by Samsung is relatively clear. For example, the viewing distance of a 55-inch TV is 3-3.5 meters, and the viewing distance of a 65-inch TV is more than 3.5 meters. Is this data worth referring to?
In fact, there are many formulas for calculating the best viewing distance on the Internet. The most popular is the viewing distance = LCD TV diagonal distance × 3. For a 55-inch TV, the diagonal distance is 55 x 2.54 (1 inch equals 2.54 cm), and the final result is 4.19 meters. If it is calculated in reverse, if the viewing distance is 3 meters, the corresponding TV screen size will be approx. It's 39 inches and it's obviously a bit small in the living room, so this formula doesn't apply right now.
Therefore, the author believes that the most reliable size selection should be the best viewing distance calculation formula combined with the resolution. The data in the following table is worth referring to. The “H†in the last three columns of 3H, 4H, and 5H refers to the height of the TV screen. It can be seen that 3H is very close to the 1080-level data on the left side. Currently, most HDTV signals and network programs of cable TV can reach 1080P. Sharpness, based on this data, determines the size of the TV.

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