I have noticed that 4K has been applied to 4K monitor, 4K UHD TV, 4K camera, 4K projector and video streaming website YouTube. But when the advent of 4K is still news, 8K comes out. Yes, an upgrade again. But what's the difference between 4K and 8K resolution? Should I buy a 4K or 8K UHD TV?
4K resolution refers to the content having horizontal resolution on the order of 4,000 pixels, while 8K resolution supposed to be the successor to 4K resolution refers to the horizontal resolution on the order of 8,000 pixels. 8K is also known as Super Hi-Vision.
Resolution: 4K has 3840 x 2160 pixels mainly for Ultra HD television, or 4096 x 2160 pixels for digital cinema. 4K Ultra HD is exactly four times of the resolution of Full HD. 8K is a resolution of 7680 x 4320 pixels. 8K Ultra HD is sixteen times the resolution of Full HD, and four times of 4K Ultra HD.
Total pixels: 4K Ultra HD has 8 million pixels, while 8K has 33 million pixels.
Frame rate: 4K Ultra HD has a frame rate of 50 fps or 60 fps, while 8K Ultra HD has 120 fps.
Standard viewing distance: viewing distance of 4K Ultra HD is 3 x screen height, while that of 4K Ultra HD is 0.75.
Standard viewing angle: viewing angle of 4K Ultra HD is 60°, but viewing angle of 8K Ultra HD is 100°.
Audio channels: audio channel for 4K Ultra HD is 5.1, but the audio channel for 8K Ultra HD is 22.2.
4K and 8K Ultra HD, the two Ultra HD formats, can provide super vivid image and deliver perfect visual sense. However, it would be a luxury for ordinary people to buy a 4K or 8K UHD TV. And even if UHD TVs are affordable, it is difficult to get various TV shows or movie videos to be fully compatible with the high-tech products, especially for 8K UHD TV. But if you want to play 4K or 8K resolution videos on iPhone, iPad, Android, Microsoft and other devices, a 4K/8K video converter is a good bet.