Opting for a small screen may compromise the clarity of 4K images, while selecting a large size with close viewing distances can cause eye strain.
1. How to Select the Right Size for Your 4K TV?
Opting for a small screen may compromise the clarity of 4K images, while selecting a large size with close viewing distances can cause eye strain.
Major TV manufacturers often advise users as follows: Screen size (inch) x 2 = viewing distance.
For example, if you want to buy a 75-inch 4K TV, you'll need a viewing distance of 150 inches, approximately 3.8 meters (each inch = 2.54 cm). A distance of 3.8 meters is calculated from the position where the screen is placed or hung to the seating area. Similarly, if your room has a viewing distance of about 4 meters (158 inches), the TV size should be selected between 75 to 80 inches.
The viewing distance and screen size are crucial specifications for selecting an appropriate TV model and ensuring the best image quality when enjoying movies at home. A small screen cannot provide the same impressive experience as a large one. However, excessively large sizes or prolonged close viewing of the TV can lead to eye strain, dizziness, nausea, and discomfort...
4K resolution means the screen has four times as many pixels as Full HD. Therefore, for the same size, 4K TV users should sit closer to the screen compared to Full HD and HD TVs. If the viewing distance is too far from the screen, viewers may not notice the difference in sharpness between 4K and Full HD.
Recommended TV viewing distance according to the Society of Motion Picture and Television Engineers (SMPTE):
| Kích thước màn hình (inch) | Khoảng cách xem phù hợp với độ phân giải Full HD 1080p (mét) | Khoảng cách xem phù hợp với độ phân giải 4K (mét) |
| 32 | 1,37 | 0,91 |
| 37 | 1,58 | 1,07 |
| 42 | 1,79 | 1,22 |
| 46 | 1,96 | 1,37 |
| 50 | 2,13 | 1,45 |
| 55 | 2,35 | 1,49 |
| 60 | 2,56 | 1,74 |
| 65 | 2,77 | 1,88 |
| 70 | 2,99 | 2,03 |
| 75 | 3,20 | 2,17 |
Additionally, according to the renowned audiovisual technology company THX, for cinema enthusiasts to enjoy better film content, reminiscent of the cinema experience, the viewing distance for movies should be closer than for regular content. At this point, the viewing angle to encompass the entire screen should be 40 degrees, wider than the standard 30 degrees as per SMPTE's regular recommendation.
Once you have the appropriate TV size and optimal viewing distance, how you position the TV, whether on a stand or wall-mounted, is also something to consider for the best viewing experience. The center of the screen should be at eye level when seated and should not be tilted more than 15 degrees above or below eye level.
Additionally, the TV should be positioned centrally in the viewing area, not tilted more than 40 degrees to the left or right from this position. If there are multiple viewers, choose a screen large enough to ensure everyone can enjoy the clearest and most beautiful images.
