4K resolution

What does 4K resolution mean and are Ultra High Definition, QFH & UHD the same?

4K resolution – what does that mean and how many pixels are that? Do you really need 4K TVs and 4K Monitors for Mac and PC? Where is the difference between 4K and Full HD, what resolutions are meant? In this post, I would like to answer these questions and bring some light into the darkness. So you start with the right knowledge in the electronics purchase 😉

The 4K resolution: that’s up to 8,847,360 pixels

One distinguishes between the two different indications or sizes in the 4K resolution. The one 4K size gave the abbreviation (4 kilos, so four thousand) its name; and the other is the more common actual resolution for videos, TVs, Blu-Rays and so on. To avoid confusion, here is a breakdown:

  • Cinema 4K (Cinema): 4,096 x 2,160 pixels; Aspect ratio about 16: 8.44; around four thousand pixels on the horizontal, hence the name “4K”
  • Conventional 4K (TV): 3,840 x 2,160 pixels; Aspect ratio 16: 9; Also called QFHD (Quad Full High Definition) or UHD (Ultra High Definition)

What is 4K2K and is there a difference to 4K resolution?

No, the 4K2K resolution is no different than the 4K UHD standard. Also, the longer term means the 4K format. This means only the two thousand, ie 4 in width and 2 in height: 4K2K. After all, the two resolutions shown above have roughly rounded out 4,000 x 2,000 pixels – 4K2K just … And here for fun all the terms that all mean the same thing:

  • 4K and 4K2K
  • 4K Ultra HD or 4K Ultra High Definition
  • UHD or UHD-1
  • QFHD QFD or Quad Full High Definition or Quad Full HD
  • 2160p or 2160i

Little geek Fact in passing: Uncoded 4K UHD needs a minimum transfer rate of 10.2 GBit / s, while mp4 encoded 4K is adapted for YouTube at 20 MBit / s and Netflix for 25 MBit / s. Here is a graphic showing the resolutions currently being used as well as their width and height – click to enlarge them:

The comparison of 1080p / I Full HD and 4K

On this picture, you can see the two resolutions Full HD (scaled to 4K) and 4K UHD. Click on the picture to see it in its full glory. The apples in the background are the same, so you have a direct comparison. You see that with more resolution, there are more details, sharper edges and so clear a picture. This can also be seen on the lettering if this is scaled from Full HD to 4K resolution (left half of the picture):

8K UHD, UHDTV or Ultra HDTV: is 4K outdated?

UHD (Ultra High Definition) has long ceased to be the benchmark when it comes to the maximum resolution with high pixel density. Therefore, this site has now been downgraded to UHD-1. UHD-2 already has 7,680 x 4,320 pixels resolution. Right, that’s 8K, which is twice the 4K, and four times Full HD. The pixel density of 8K is 16 times as high as Full HD, details are so finely drawn as never before. The required data rate for transmission of 8K raw data is 24 Gbit / s.

Why do you need a 4K resolution TV or monitor?

With more resolution and a wider color gamut/gamut (HDR video), images, videos, video games and similar content can be rendered much sharper, more accurate and thus more detailed and realistic. Especially those who work in video editing or image editing can benefit from it. In terms of video or console games, the content displayed becomes more and more realistic. Gone are the days of angular polygons and blurred edges that look like copied. Video games should come along like filming – and with 4K, 5K, and 8K you can do it. An article about 4K televisions, which you can also use as monitors, can be found here. Get information about the LG UltraFine 5K display for the Mac / MacBook here: Click.

Selection criterion film medium: Full HD DVD, Blu-Ray or UHD Blu-Ray?

On the comparison chart above you can already see the initial DVD resolution, which does not even approach the 720p / I standard, let alone full HD. For more than a decade, HD or Full HD DVDs are already in vogue. So if you watch DVDs, then a Full HD TV or monitor is enough. Blu-rays continue to differentiate. Because there are some with Full HD (1080p / i) and which with UHD or UHD-1 or 4K resolution. There is also an article here on the blog.

The other way around, a shoe is made of it

It’s not just that increasingly better or higher-resolution televisions are needed because the output medium is sharper. Accordingly, film and television productions are increasingly relying on 4K resolution UHD, 8K UHD or similar resolutions in order to be able to supply ever-increasing TV sets with sharp pictures. Because the TV takes up half the wall, then a scaled-up Full HD looks like a potato …

Conclusion for the 4K2K UHD-1 Quad Full HD resolution

However you turn it, all 4K resolution remains in the end, which roughly sounds like UHD. I hope I did not confuse you even more with this guide, but could provide clarity. If there are any questions, then just post them in this post as a comment – I’ll come back to you!

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