The 8K (UHD-2) resolution. What resolution is 8k

To enhance the visual experience at 8K resolution, NHK Science & Technical Research laboratories have developed a 22.2 multi-channel sound system using 24 speakers (including two subwoofers).

The 8K (UHD-2) resolution

Not so long ago, 4K resolution (UHD = Ultra High Definition) was considered a standard. And although 4K content and 4K technology has not really reached the “masses” yet, the successor to 8K has already appeared on the horizon. Below you will find interesting facts about the 8K resolution:

Comparison of different resolutions, simplified view

8K describes the UHD-2 and is the successor to 4K (UHD). 8K resolution has approximately 8,000 columns horizontally. Or 7680 x 4320 pixels, spread over the appropriate display size in the classic 16: 9 format, which is four times more pixels than in 4K and 16 times more than in Full HD.

This means there are approximately 33.2 million pixels on the display = 33.2 megapixels. Sometimes also 8192 x 4320 pixels at around 17: 9 is called 8K. However, with a rather unusual page format, this resolution is not suitable for consumer electronics.

This question cannot (yet) be answered in a general way. The differentiation depends not only on the viewing distance and size of the 8K screen, but also on other details such as the equipment and individual eyesight.

Simplified and in general, the farther the viewing distance, the fewer pixels per inch are required to prevent what you see from appearing “pixelated”. For example, a smartphone that usually comes close to the eye requires a higher pixel density than a home TV.

In 8K, the pixels are closer together and smaller, which can be seen as an improvement in image quality in terms of level of detail and depth. Colors can also appear more vivid thanks to the 12-bit color depth. Perception of increased color brilliance and greater detail may vary from viewer to viewer.

Schematic view of Full-HD, 4K and 8K sub-pixel structures Schematic view of Full-HD, 4K and 8K sub-pixel structures

The diagram above shows an illustration of the increased accuracy from Full HD to 8K. It shows the corresponding sub-pixel structure of different resolutions with the same section in each case. In Full HD, the sub-pixel is relatively large, you see 4 x 4 = 16 pixels. Four times the number of pixels is given for 4K: 8 x 8 = 64 pixels. In 8K, the number of pixels is again four times greater: 16 x 16 = 256 pixels .

The 8K data transfer, which is quite complex in terms of quantity, is demanding. Only HDMI from version 2.1 provides enough bandwidth to transmit 8K at a refresh rate of 60 Hz.

In addition, only this version supports 14 and 16-bit color depth, as well as 4K 3D 50 / 60p, which the predecessor HDMI 2.0 could not. Generally, HDMI 2.0 “only” manages 4K. DisplayPort supports 8K from version 1.3 .

8K compatible devices, such as TVs, are still very expensive and 8K multimedia content is difficult to access. Already, 4K content is only supported by a few TV stations. There are many movies available as UHD Blu-Ray, but the necessary playback devices are not yet widely available.

So, 8K content and playback devices are even scarcer, and it will take years before they can spread across the country (as of end of 2019). “Technology first, then hardware and content”, however, is software development and can also be seen in 4K.

Buying 8K cables and adapters is already a good idea, not only for technical early risers, to prepare for the future. The price difference with 4K products is not great and 8K products are backwards compatible. Home theater and gaming enthusiasts who use large screens can already use 8K. Also interesting for gamers: in 2020, the new Xbox and Playstation will be on the market, both are compatible with 8K and support 8K streaming.

NEW DisplayPort 1.4 Repeater

It can be used to amplify the DisplayPort connection signal up to 12 m. A cable up to 2 m long from a desktop or laptop can be connected to the inverter input port. A cable up to 10m in length is then routed to a display or TV at the amplifier’s output port.

Connectors:
Entry:
1 x DisplayPort female
1 x DC 5V power connector
Exit:
1 x DisplayPort female
Supports HBR3 data rate (8.1 Gbps
Cascade (Daisy)
Dimensions (LxWxH): approx. 55 x 54 x 20mm

Item 85660

Samsung offers 8K models in its Neo QLED 2021 range – which uses Mini LED technology – while QLED 2020 also has 8K options. If you’re looking for an 8K TV, chances are Samsung will be one of the cheaper options.

The Basics of 8K

8K is a resolution higher than 4K – and that’s it. 1080p screens have a resolution of 1920 by 1080 pixels. 4K screens double these numbers to 3840 by 2160 and quadruple the number of pixels. 8K doubles those numbers again, to a resolution of 7680 by 4320. That’s four times the pixels of 4K, which means 16 times the pixels of a 1080p TV.

For context, look closely at your TV set. Try to find a single pixel (not individual red, green and blue lights; they are sub pixels, meaning you are too close). If you are looking at a 4K screen, imagine four pixels taking up the space of that single pixel. If you are looking at a 1080p screen, imagine a grid of sixteen pixels, four by four, within that single pixel. This is 8K. It’s much sharper than 4K and much, much sharper than 1080p.

What About HDR?

If you’ve been paying attention to TVs and 4K, you’ve heard the term HDR, high dynamic range. You may also be confused by what HDR is and whether it is different from 4K. HDR can be a complicated concept, but it’s important to understand that 8K is still evolving and it’s helpful to know when you are buying a 4K TV.

The resolution – 1080p, 4K, and 8K – indicates the number of pixels on the screen. HDR and SDR (Standard Dynamic Range) determine what each of these pixels shows. Each pixel is assigned values ​​that determine the brightness of its red, green and blue (sometimes white) sub pixels that make up the color and light of that pixel, more specifically its hue and luminance.

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