If the short answer is that 4K Ultra HD is four times more pixels than Full HD. Accordingly 8K Ultra HD four times the resolution of 4K and sixteen times Full HD. How do these numbers important for the average consumer? Whether the increase in the display resolution quality breakthrough in cinematography and graphics? And how soon 4K televisions will give way to a new generation? On all these questions we will answer today.
What is 8K?
Mathematics at primary school level suggests that 8K should be a two-fold increase compared to the 4K, but in fact it is not. Since we are dealing with horizontal and vertical lines, and two-fold increase occurs in both directions, it turns out that 8K is four times 4K, or sixteen times for Full HD.
How much is that in pixels? Very much. Implies 8K resolution of 7680 horizontal lines and 4320 vertical. That makes a total of about 33 million pixels (more specifically, 33 117 600). For comparison, 4K, or 3840x2160, is 8.2 million pixels, and Full HD or 1920x1080 is just over 2 million.
The total number of pixels matters for detail, however, improve the image and contribute to other technologies, for example, high dynamic range HDR. It makes the colors brighter, richer, and has a positive effect on the perception of images when viewing from a distance. And the benefits of 8K manifested on large displays and when viewing up close.
A brief history of the 8K TV
the Birth of a new format had at that time, when 4K TVs have just started to gain popularity. The first 8K TV showed the company Sharp on the exhibition CES 2013. It had a diagonal of 85 inches, but in fact was not the first device with such high resolution, because the display panel with the same characteristics have appeared before. Technology was a breakthrough, but still not ready for mass implementation. This explains why 8K televisions were sold much later than 2013.
In the years that followed, the prototypes of TVs with ultra-high resolution and showed other companies. They were not even deterred by the fact that the broadcasters barely have time for the introduction of 4K. In 2016 the Japanese broadcaster NHK began the first satellite broadcast in 8K. A little later in the same year a part of the Olympic games in Rio de Janeiro was filmed and shown in 8K on NHK. Of course, watch it in this quality on a home TV was impossible, so the broadcast was conducted in specialized cinemas.
In September 2019, the American Association of consumer technology CTA adopted the new standard and has developed a logo for devices that support 8K Ultra HD:
Any 8K TV that meets the requirements of the CTA, may have this marking on packaging and promotional materials to let the buyer know before him the best and the latest product of modern technology. The requirements are that the TV must have a native resolution 7680х4320 and the ability to scale a lower resolution up to 8K. Also need support for HDR, but no specific guidance on what standard is preferred. And in addition to the above device requires at least one input protection HDCP 2.2 processing technology and 10 bit color on a pixel-by-pixel basis.
When 8K televisions become widely available?
let's Start with the fact that 8K TVs are already being sold. Samsung released its first model in 2018 and later 2019 at CES introduced a lineup, which included Q900 with a diagonal 55-98 inches and a price of 250 thousand rubles in the basic version. The first 8K OLED the TV LG was the largest in the history of the company: 88-inch OLED Z9 worth 2.5 million rubles. Its more affordable counterpart – 75-inch 8K NanoCell – is offered for 300 thousand. Series Sony 8K Z9G released in two sizes — 85 and 98 inches. For the benefit of thirteen additional inches will have to pay an incredible amount to 6 million rubles.
8K-TV – a real luxury. This year, they will remain too expensive for most buyers, and in the next also likely. However, as their production will join more and more brands, prices in a competitive environment will inevitably begin to fall. So just a couple of years significantly decreased the cost of 4K TVs with the new generation sooner or later will happen the same.
The first 8K TV from Sharp has started selling in Japan in 2015 for "professional use" for 133 thousands of dollars. Today it is no longer exclusive: we already have its 55-inch counterpart from Samsung for only 3.5 thousand dollars – that is 97% cheaper. These figures show that the segment of televisions with ultra-high resolution are becoming increasingly available.
What about the video in 8K – its a lot or a little?
A year ago, 8K video available for home viewing, almost non-existent. Even if at that time the house stood 8K-TV, the sense of it almost was not. But the situation is gradually changing for the better.
Streaming website Vimeo has added support for 8K in November 2017 and currently offers over 6,000 movies with the corresponding tag. YouTube new format appeared before, now the platform has in stock thousands 8K-rollers, although when looking through the filter system as a maximum resolution of 4K is specified. In December 2017 NHK 8K has launched a TV channel in the test mode, and last year made it permanent, but wide variety of gear on it is not observed. Main 8K broadcasting in 2020 – at least in Japan – will be the Olympic games in Tokyo. How many games will be broadcast in this resolution in the US and Europe, is still unknown.
Should I buy an 8K TV?
The TV with the highest resolution possible – the purchase of extremely expensive, but to some extent justified. The availability of movies and videos in 8K not the only reason. The fact that these devices have the function of "apskeyl", that is able to stretch a 4K image up to 8K with positive changes in quality. To confirm this, Samsung has put close to two 85-inch TVs, one of which reproduced the 4K video in 4K and the other with magnification up to 8K, and in the second case, the images look clearly better. Major role is played by latest processors Samsung with artificial intelligence system, which works on improving the quality of 4K content frame-by-frame in real-time.
Stores уже предлагают профессиоonльные 8К-камеры, и можно сказать с уверенностью, что в ближайшее время количество видео в 8К on дисках и в интернете будет расти, но возможно не так быстро, как хочется. Если говорить о 4К, то данный формат еще не достиг пика своей популярности: многие потоковые сервисы его поддерживают, растет выбор дисков Blu-ray 4K UHD, одonко до того, как 4К достигнет повсеместного распространения как HD, еще далеко.
The adoption of the digital broadcasting standard ATSC 3.0 will eventually lead to the fact that all the TV world will switch to 4K. However, ATSC 3.0 was finally approved by the American Federal communications Commission relatively recently – in November 2017, and to obsolescence him away. Technically 8K is compatible with ATSC 3.0, but at the moment, most providers of cable, satellite and other television busy promoting 4K.
, Thanks to demand for HDR, the TV crew also focused on expanding offerings in high dynamic range, and this is another factor that may prevent the spread of 8K, at least for now.
And while TV with support for 8K you can already buy for home use, its practical value is small (with HD and 4K at the dawn of their emergence was the case as well). In addition, the majority of people is enough 4K TVs and a few people agree to exchange it for some benefits as.