What's the difference between 4K and 8K TV?

4K VS 8K: The Difference between 4K and 8K
Technically, both 4K 8K are the ultra-high definition television (UHDTV) resolution in digital television and digital cinematograph. Theyre the advanced Super Hi-Vision (SHV) TV video technologies and also remarked as the next generation TV video processing methods. Many people may think that the relation between 8K and 4K is the same as 1080p and 720p. Not exactly, 8K is current highest UHDTV resolution standard yet 4K is the entry-level one.

1. 8K vs 4K Resolution
8K UHD means a horizontal resolution of 7680 pixels and a vertical resolution of 4320 pixels. It has 2 times the horizontal and vertical resolution of the 4K UHD (3840 x 2160) with 4 times as many pixels overall and 16 times as many pixels as Full HD (1920 x 1080). Generally, 8K UHD has 33.2 megapixels (1 megapixel is either 1 million or 1,048,576 pixels), while 4K UHD has 8.3 megapixels. An example should make this easier to understand. If you look at Blu-ray movies without changing resolution on a 8K TV, the screen will only take up 1/16 of the screen as Blu-ray always stores video in 1080p. If you play 4K videos on 8K TV, the image cannot be played in full screen, as well. And the higher the pixel counts within a digital image, the sharper the image displays.

2. 8K vs 4K - Frame Rate
Different from resolution that is closely related to quality, frame rate refers to the number of individual frames or images that are displayed per second in a movie, computer game display or TV. It is widely used in synchronizing audio and pictures. A common argument claims that the higher the frame rate is, the more natural the motion that you can capture from the movie. As opinions vary, its hard to verify. Anyway, 8K supports frame rate up to 120 Hz progressive, while 4K is at 50-60 frames per second.

3. 4K vs 8K - Audio Channel
8K Ultra HD supports 22.2 audio channel, yet the audio channel for 4K Ultra HD is 5.1. Beside at the front of the room left, center, and right speakers are placed in the traditional arrangement way, two sub woofersproviding localized LFE informationalso will be placed at the front. Such three-dimensional arrangement has been developed by NHK and users can experience the Super stereo via 8K TV in the near future.

4. 4K vs 8K - Viewing Angle
Another difference between 4K 8K is that 4K offers a 55-degree viewing angle, as opposed to horizontal 100-degree viewing angle available in 8K. Viewing angle is the maximum angle that people can view with acceptable visual performance on monitor. So 8K TV allows you to watch videos via more visual angles.

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