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It should be determined according to the actual viewing distance, that is, how many meters is the straight-line distance from the TV screen to the human eye.
Attached: Comparison table of the best viewing distance between flat-screen TV and CRT vintage TV viewing distance (m) 16:9 Flat-screen TV 4:3 CRT TV Diagonal (inch) Diagonal (inch) 26 17
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The size of the TV is reasonable, and the viewing distance is reasonable.
15 inches 1 52 meters.
17 inches 1 73 meters.
20 inches 2 03 meters.
21 inches 2 13 meters.
25 inches 2 54 meters.
29 inches 2 95 meters.
30 inches 3 05 meters.
34 inches 3 45 meters.
42 inches 4 27 meters.
43 inches 4 37 meters.
45 inches 4 57 meters.
50 inches 5 08 meters.
55 inches 5 59 meters.
60 inches 6 10 meters.
70 inches 7 11 meters.
You can buy a 46-inch one with a screen center line, slightly below the eye height in a seated position.
At present, most families have a two-bedroom layout, and the living room is generally 20-30 square meters. In this way, the distance we can watch TV is about meters - 4 meters, and the best size to choose a TV is 40 42 inches. At a distance of more than 3 meters, the perception of an LCD TV of this size is the most natural, and at this distance, the human eye does not need to rotate too much to observe the whole picture.
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40"The screen is on it. If you have a myopic person in the family, 50" is fine.