8K TVs are the talk of CES 2020, so now is the time to start familiarizing yourself with 8K Ultra HD and how it’s different from 4K Ultra HD. In a nutshell, if 4K Ultra HD is four times the resolution of Full HD, then 8K Ultra HD is double the resolution of 4K Ultra HD and 16 times the resolution of Full HD. But is this a worthwhile addition to our home entertainment setups, and will it replace 4K Ultra HD anytime soon? These are all valid questions, and we have the answers right here.
What is 8K?
If you use basic math, it may seem like 8K would provide double the resolution of 4K, but that isn’t the case. Since we’re talking two dimensions here — horizontal lines and vertical lines — it’s actually a whopping 16 times the pixels of HD and four times the pixels of 4K: 8K resolution equates to 7680 x 4320, or 33 million pixels (33,117,600, to be exact), instead of 3840 x 2160 (8,294,400 pixels). To more easily visualize it, imagine four 4K TVs placed in a four-by-four grid. That is a lot of pixels.
Other technologies such as high-dynamic range (HDR) can and do sometimes make a more visible difference, especially from a distance, since TVs show a brighter and more colorful picture with HDR. That said, 8K is absolutely noticeable on larger displays, especially up close.
A brief history of 8K TV (so far)
Just as 4K TVs were beginning to take off, 8K started appearing. While display panels had been shown earlier, Sharp showed off the first actual 8K TV at CES 2013, with an impressive 85-inch model. Of course, this TV wouldn’t be available for purchase that year (or years later), which is often par for the course at CES, especially with cutting-edge technology.
In the following years, other companies began to show their own 8K TV prototypes, even as content providers were struggling to keep up with 4K. This too eventually changed, with Japanese broadcaster NHK kicking off the first 8K satellite broadcasts in 2016. Later that year, part of the 2016 Rio Olympics were shot and broadcast in 8K by NHK, though viewers could only watch them in that resolution at special theaters.
In September 2019, the Consumer Technology Association (CTA) announced its 8K TV program, complete with an official 8K Ultra HD logo. Any TV that meets the CTA’s specifications for 8K can voluntarily display the logo on packaging and marketing material, which is intended to give buyers some peace of mind that they’re getting the latest and greatest. To qualify, a TV must have a truly native resolution of 8K (7680 x 4320) and be able to upscale non-8K material to full 8K resolution. It also has to support HDR — though there’s no requirement for which of the many HDR formats it must support. Finally, it needs to have at least one input that’s HDCP 2.2-compliant and be able to handle 10-bit color on a pixel-by-pixel basis.
When will 8K TVs become readily available?
Ready or not, 8K TVs are now here. Samsung launched its first model in 2018, later launching an entire series at CES 2019, which includes the Q900, an 8K model that’s available in sizes ranging from 55 to 98 inches, with prices that start at $3,500. LG’s first 8K OLED is also its largest: The $30,000 88-inch 8K Z9 OLED is now on sale, but if that price is too steep, it also has a 75-inch 8K NanoCell model for $5,000. Sony’s 8K Z9G Series is available in 85- and 98-inch sizes, though at a whopping $70,000 for the larger model you’re paying a steep premium for those extra inches.
8K TVs will likely remain out of reach for most consumers this year, and possibly even next year, but you can expect prices to start falling quickly now that most major manufacturers are producing them. In the same way that 4K prices dropped sharply over just a couple of years, 8K pricing will follow suit — possibly even faster.
To give an idea of how far things have come, Sharp’s first 8K TV went on sale for “professional use” in Japan in 2015 for $133,000. The fact that Samsung’s 55-inch model costs just 3% of the price of that early model shows you just how quickly things move in TV land — and how competitive Samsung’s Q900 really is for first adopters.
What about 8K content?
Even a year ago, there wasn’t much 8K content you could watch at home, even if you had an 8K TV, but that is slowly changing.
In November 2017, video-streaming site Vimeo added support for 8K, and it now has over 6,000 videos tagged as 8K. YouTube got on the 8K bandwagon even earlier, and it too boasts thousands of 8K videos — though strangely its search filters only let you look for 4K as a maximum resolution. NHK launched a test channel dedicated to showing 8K content in December 2017, and last year made the channel permanent. With the right equipment, Japanese consumers can enjoy this (limited) 8K content in their homes right now. The 2020 Tokyo Olympics will be a major showcase for 8K broadcast, at least in Japan, but how much of the games will be broadcast in that resolution in the United States or Europe remains to be seen.
But native 8K content isn’t the only reason to have an 8K TV if you’re looking at a large screen size. 8K TVs can upscale 4K content to 8K, and the difference in clarity is stark. To prove this point, Samsung put two 85-inch TVs side by side, one playing 4K content in 4K, the other upscaling 4K content to 8K. The difference was apparent, with the upscaled 4K video playing on the 8K TV looking visibly superior. Samsung’s latest 8K TVs are equipped with a dedicated 8K processor with an artificial intelligence system designed to upscale 4K content frame by frame in real-time.
There are also 8K cameras available, and you can be sure that companies are preparing to offer 8K content at some point, but for a clue as to how long you’ll need to wait, simply take a look at where 4K content is right now. Streaming services like Amazon, Netflix, Vudu, and others offer 4K streaming, and there’s a large and growing collection of 4K UHD Blu-ray discs, but it has a long way to go before 4K reaches anywhere near the ubiquity of HD.
The ATSC 3.0 digital broadcast standard will eventually lead to 4K broadcasting over the air and through cable and satellite providers, but the standard was only finally approved by the FCC in November 2017. Technically, 8K is compatible with ATSC 3.0, but right now, it’s an easy bet that most cable, satellite, and other content providers are focused on rolling out programming for viewers eager to make the most out of their 4K TVs.
Thanks to the popularity of HDR, content providers are also focused on increasing their HDR offerings, yet another thing that may stand in the way of a widespread focus on 8K, at least for the time being.
While you can already get your hands on an 8K TV, like the early days of both HD and 4K, it will be a lot longer before they’re practical for most people. For most of us, 4K TVs have plenty of life left in them.
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