A 4K public display has a sharpness of 3840 by 2160 pixels. This is the highest possible resolution at this time. 4K, or UHD or 2160p, displays texts, presentations, photos, and videos razor-sharp. Keep in mind that the resolution of 3840 by 2160 pixels is fixed, regardless of the screen size. A 4K screen of 43 inches has as many pixels as a 4K screen of 85 inches. Up close, the 43-inch model seems sharper. The 85-inch model looks good from a distance. Choose a 4K screen up to 65 inches if the viewing distance is less than 2 meters and choose a 4K screen from 65 inches if the viewing distance is greater.