4k ultra hd resolution – description, pros and cons, how much is it in pixels

Resolution is an important characteristic of a TV and video. It denotes the pixel count by horizontal and vertical position. The higher the resolution, the clearer, more detailed the image captured on the phone. TV manufacturers are limited to indicating horizontal numbers. For example, 4k resolution refers to the resolution of digital cinema and computer graphics. It corresponds to 4000 pixels horizontally.

4k resolution – description of the standard

The Japanese concern NHK has developed the UHDTV standard for the telecommunications sector. It was adopted in 2012 during the meetings of the International Telecommunication Union. The maximum resolution was 3840×2160 pixels. It became known as Ultra HD. TV screens were able to get a widescreen aspect ratio. It became equal to the 16:9 position. Today, this standard is one of the most frequently encountered and purchased. In the film industry, it is called 4K because the frame width of the frame has become 4000 pixels. It is interesting that television producers do not think to stop there.

To understand ultra-high definition video, you need to imagine a screen of 15 meters. The picture on it will remain with the same clarity as on a standard television screen. The digital cinema projector only supports 2k resolution. Support for quad format is on IMAX. Translated from marketing English, this is the maximum type of image. For the standard, several projectors with four times the resolution are used. 4k implies absolute clarity and detail of the image, which is transmitted brightly and saturated. Density with realism of the image grows due to pixel size reduction and increase in their number. As a result, objects become more detailed in outline and can be viewed better. Compared to 2k, 4k offers an improved frame rate, color depth and sound quality. UHD applies frame rate. The color has a depth of 12 bits, and the color coverage is 75%. The screen reproduces about 69,000,000,000 shades of the color palette. For a better understanding, the top-end Full HD models change frames at a speed of 60 kiloseconds. The color is 8 bits, and the color space covers the screen by 35%.

The difference between 4K and 2K resolution

HDTVs have been a standard used for decades. Today, there are no television devices that do not display 720p resolution. “P” stands for progressive picture type. I is an alternative, denoted interlaced. The odd and even lines are displayed alternately in each frame. This results in degraded image quality. The term 4000 pixels is a display format that has a wide horizontal resolution. UHD is 4k. The difference is that it is more suitable for consumers and television with 2k. As a result, DCI is considered the professional production standard, rated at 4096 x 2160 pixels. UHD is a standard with a resolution of 3840 x 2160 pixels. There is an 8k format at 7620 x 4320 pixels. It gives a flawless image.

Pros and cons of 4k resolution when used on TVs

4k resolution delivers ultra-clear image detail by increasing pixel density per screen square millimeter. The sweep rate is 120 frames per second. Such a dynamic image gives less strain on the eyes, especially if a person watches television for a long time and hourly. 4k resolution produces a range of deep, rich colors. It enhances image clarity in both bright and dark areas of the screen. The format gives the best sound quality. The undoubted user advantage of Ultra HD TVs are the following facts:

1. The format can be used for widescreen video games, computer matrices; The screen immerses you in virtual reality without special glasses.
2. The matrix forms a three-dimensional type of image that the viewer evaluates from any moment; for stereo you don’t need glasses.
3. TV can be watched at a short distance, this is due to a fourfold increase in the screen image.

The advantage is the moment of the possibility of placing a TV in a small apartment with a modest area of ​​​​rooms.

The main disadvantage of 4k resolution is the increased requirement for signal quality. This leads to limited content that is transmitted in the quality used. There are special movies and shows on YouTube that can be used on 4k models. On Netflix there are films with series with a paid, expensive subscription. Megogo has plenty of high-definition content.

Which TVs use 4k

4K resolution is one of the highest quality and clearest. Thanks to it, you can watch TV programs with increased clarity. The advantage of this resolution is high contrast with image detail, creating a 3D effect without the use of special glasses. Today, 4K resolution is available in the following TV models: Xiaomi Mi TV 4S65 T2S 65, LG 43UM7020 43, Samsung UE43TU8000U, Samsung UN78KS9800, LG 43UK6200, LG 50UN73506LB, BBK 4ЗLEX-8161 / UTS2C. It is worth pointing out that all TVs with 4k resolution have a “smart” system that makes it possible to view video content, photo content and use the Internet, applications and games. Thanks to the direct cooperation of the developers of the standard with the manufacturers, the consumer, in the end, gets access to the best content. A bonus for users is access to a quality format of films at the same time that they are broadcast in cinemas. To better understand the capabilities of 4k TVs, certain conditions must be met. The device must have a wide diagonal. It must necessarily have a built-in 4k TV broadcast with the broadcast of the available video data. Ultimately, a person will receive a live with a three-dimensional picture, in which colors are transmitted juicy, naturally. It must necessarily have a built-in 4k TV broadcast with the broadcast of the available video data. Ultimately, a person will receive a live with a three-dimensional picture, in which colors are transmitted juicy, naturally. It must necessarily have a built-in 4k TV broadcast with the broadcast of the available video data. Ultimately, a person will receive a live with a three-dimensional picture, in which colors are transmitted juicy, naturally.
Samsung UE50RU7170U works in 4k resolution [/ caption]

2K resolution, HD, full hd, UHD, 4K and 8K – the difference

High definition television or HD is a standard used for 15 years everywhere. It denotes a resolution of 720p or 1280×720 pixels. However, 90% of TVs on the market today support Full HD. This means that it displays 1080p or 1920×1080 pixels. “R” – progressive in translation from English. It means that the image of each frame is sequential. Each line of the frame is drawn in detail. The alternative to the letter “R” is “i”. It stands for interlaced scanning. This is on the HDTV standard in 1080i. Odd with even lines are displayed in turn in each frame. This leads to a noticeable deterioration in image quality. UHD or Ultra HD is the same standard as 4K. The exception is that it gives a smaller number of dots – 3840×2160 dots (2K). 4K is the successor to the 2K standard, which was created by DCI and offers several times improved resolution. 4k, Ultra High-Definition or Ultra High Definition – the ability of a device to output images to monitors with TVs and projectors. This is the resolution of the video with a snapshot or other image.
There is also a Full HD Ultra format. Often called 8K, it has a resolution of 7620 x 4320 pixels. There are many TVs with this parameter on the Internet today. However, to appreciate it, you need a diagonal of 85 inches on the TV. The advantages of the formats are visible at different user distances from the screen (with a diagonal of 20 to 130 inches). At a distance of 12 meters, all standards look the same. At a distance of up to 10 meters, the advantages of 720p are noticeable, at a distance of up to 7.5 meters – 1080p, and at a distance of up to 5 meters – 4k. The condition for all the standard is the same: the diagonal of the TV is from 50 to 140 inches. Otherwise, it is not possible to evaluate the benefits. What is the difference between 2K, 4K, 8K resolutions in numbers and pixels: https://youtu.be/cUWkH_qV5Lg

Standard	Amount of points	TV examples
2k	1280×720	OLED TV LG OLED55BXRLB 55
4k	4096 x 2160	Panasonic TX-58DXR900 (TX-58DX900)
HD	1280×720	TV Hi 39HT101X39″
Full HD	1920×1080	Samsung UE32T5300AU 32″
UHD	3840×2160	Hi 50USY151X 50″
8k	7620 x 4320	Sony KD-98ZG9 97.5″