5K (image resolution)
5K resolution , also called 5K , refers to a horizontal image resolution in the order of 5000 columns based on the definitions of 2K and 4K .
description
The specification “5K” does not indicate which aspect ratios , bit depths , refresh rates or brightness and color values are coded in the images. The ITU-R recommendation BT.2020 for high-definition television in the 2015 version does not recognize this format, but instead provides for 8K resolution as the next step from 4K . Nevertheless, several devices with this intermediate step have established themselves on the market. In particular, a widened representation of the 4K UHD, then with an aspect ratio of 21: 9, could be advertised well as 5K. In the HDMI specification 2.1 of 2017, the terms for 5K and 10K were introduced accordingly. In addition to the intermediate format of 4K UHD and 8K UHD2, there have historically been devices in which two 2K HDTVs were combined side by side to form a picture, which were controlled via two cables.
| Bildseiten- relationship |
columns | Lines | Number of pixels (megapixels) |
annotation |
|---|---|---|---|---|
| 32: 9 | 5120 | 1440 | 7.37 | Dual wide QHD |
| 64:27 (≈21∶9) | 5120 | 2160 | 11.06 | 5K2K / 4K ultra-wide |
| 16: 9 | 5120 | 2880 | 14.75 | UHD + / 5K (5K3K) |
equipment
Digital playback devices such as computer monitors , screens , televisions or projectors , as well as recording devices such as digital cinema cameras or digital cameras with a number of columns from around 5000 columns can be identified with the attribute “5K”. These devices are able to fully process and reproduce images with this number of columns without having to combine pixels ( downsampling ).
Technically, a full 5K resolution with 5120 × 2880 at 30 Hz could already be delivered with Displayport 1.2. This was first implemented by AMD with the Radeon HD 6850 and 6870 in October 2010. Nvidia followed with the Kepler architecture in March 2012.
However, the first monitor (Dell UltraSharp UP2715K) from 2015 was able to display 5K at 60 Hz and allowed two Displayport 1.2 cables to be connected. Apple also followed suit in 2015 with 5K Retina displays for the iMac with the same 27 "screen size. The Nvidia 1000 series then implemented Displayport 1.3 in 2016, which allowed direct control. The AMD Radeon RX 480 followed shortly afterwards. These monitors for PCs each had the still usual aspect ratio of 16: 9.
With the presentation of the first 8K devices, which were also shown at IFA 2018, a broad discussion began that 4K devices already represent a sufficient resolution for the human eye. Also Digital Cinema works with maximum 4K resolution (4096 × 2160). To improve the image impression, one should concentrate on other criteria, such as an extended color space, higher dynamics (contrast range) and higher image repetition (frame rate). The industry reacted to this and in 2018 presented the first devices that are derived from 4K resolution but have been widened to the cinema format 21: 9 - in particular the LG 34WK95U and Philips 349P9H devices with a screen diagonal of 34 ".
In fact, there was already a device with a 21: 9 resolution before - the Samsung UN105S9W was presented at CES 2014, and has already received the name "5K TV". This oversized television with 105 "but screen size could not gain broad acceptance due to its extreme price. The units from 2018 were indeed from the manufacturers as 4K" ultra-wide "( überbreit ) classified, but in advertising they appeared as a 5K television. Actual television does not broadcast in this format, however, but will continue to rely on the 8K image resolution introduced by the local television company NHK for the 2020 Olympics in Tokyo . The market share of wall-filling, oversized televisions, for which an 8K image resolution brings added value, At the end of 2019, however, was only around ten percent.
Individual evidence
- ↑ BT.2020: Parameter values for ultra-high definition television systems for production and international program exchange , ITU, 2015, accessed on September 12, 2018
- ↑ HDMI 2.1 SPECIFICATION ANNOUNCEMENT . HDMI forum. January 2017 .: "Multiple resolution support includes 5K and 10k resolutions for PC displays, digital signage, surveillance, and various commercial and industrial AV solutions"
- ↑ Ryan Smith: AMD's Radeon HD 6870 & 6850: Renewing Competition in the Mid-Range Market . October 21, 2010. Retrieved October 27, 2016.
- ↑ Tim Ziemer: UHD and 4k - these are the differences . CHIP. December 8, 2018.
- ↑ Mike Wheatley: Samsung & LG Begin Sales of 105 ″ 21: 9 4K, Nay, 5K TV . HDTV test. July 30, 2015.
- ↑ Ulrike Kuhlmann: 8K televisions are coming - but who actually needs them? . Heise publishing house.