What Is 4K Resolution

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What Is 4K Resolution

The 4K resolution is a type of resolution expressed in 3840×2160 pixels, also known as 2160p. In total, a screen classified as 4K houses a total of 8 million pixels. Arranged in 3840 columns and 2160 rows. Considered the new standard for high-end TVs. So it has some interesting features that are important to know, especially because of a new purchase. Here you will get a complete guide about what is 4k resolution & all about regulations.

The quality of video on TVs and monitors of new generations is getting better and better. Video resolution plays an important role in this. Increasingly, various advertisements for 4K video are starting to appear in magazines and electronics stores. Today I propose to figure out what 4K is?

What is 4k resolution?

The high definition television standard 4K Ultra HD TV (or UHD TV). Provides high definition images four times higher than the 1080p Full HD standard known to many. Ultra HD 4K pixel resolution at 16: 9 aspect ratio is 3840 x 2160.

The widespread use of the 4K standard requires the replacement of various studio television equipment and not only. Therefore, it will take several years to introduce 4K into our lives. The only thing for them is still difficult to find videos or films.

Even 1080p content looks much better on Ultra HD screens. So it’s worth taking that into account when buying a new TV. YouTube supports uploading and watching videos in 4K resolution. To view the 4K resolution video, you need to select the 2160p quality in the player settings. To watch such a video smoothly, you need a fairly powerful computer.

What are 4k resolution and the difference between Full HD format?

Let’s start with the name chosen for this resolution. The question is much simpler than one might think: 4K represents nothing more. Then the width of the images, which amount to just under four thousand pixels wide.

If, at first glance, it may be difficult to imagine the difference with a screen with Full HD resolution. Everything can be easier through the use of the data relating to the columns and rows already mentioned. On a Full HD screen, there are 1920 columns and 1080 lines, for a total of about 2 million pixels; on a screen of the same size, the number of rows, columns, and pixels doubles.

Otherwise, however, one can think that considering the number of pixels, a Full HD screen could perfectly cover a quarter of that in 4K. This can give an idea of ​​the image quality, which becomes much more detailed and cleaner, offering a completely different viewing experience than in the past.

4K resolution, what is the optimal distance?

To watch a 4K resolution TV screen and appreciate all the details, you must – as with all TVs – choose the optimal distance. Also, in this case, the difference is made by the screen’s size, a detail that can have a decisive influence on the issue. In general, the distance to be kept is approximately / one and a half times the screen’s size. Consequently, if we are talking about a 40-inch screen, the distance to maintain will be 1 / 1.5 m. As the size increases, however, it will be necessary to remain more and more distant. In fact, with an 80-inch screen, the optimal distance would be between 2 and 3 meters.

4K resolution, what types of connections are possible?

Basically, you can use standard HDMI cables or a DisplayPort with a 4K TV is connected to a computer. As many already know, the new HDMI 2.0 cables have become the standard for new 4K televisions. Although there are no external differences, what changes everything is the supported speed, which can reach 60 frames per second. Even faster is the type called HDMI, essential for viewing HDR content. Last is the HDMI 2.1 standard: with this, everything reported above is exceeded. Touching 120 fps with a resolution of 4K or even the60 fps at 8K.

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4K, 4K Ultra HD, and 4K Ultra HD Premium resolution: what are the main differences?

From 4K, a standard called Ultra HD was born, with a slightly lower resolution that stands at 3840×2160 pixels. This format is much more common than you might think. Despite losing a handful of pixels compared to its larger sibling. Despite the difference in size, just like standard 4K. The 4K Ultra HD format can deliver particularly vibrant images, with a density of detail that cannot compare with previous resolution standards. Therefore, it remains an extremely advantageous choice. At a truly meager price difference, which does not justify a purchase designed to last over time.

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The Ultra HD Premium format, abbreviated with the acronym UHD, was chosen by 35 manufacturers, such as Sony, Samsung, and LG, audio production companies, such as the famous Dolby, the most important and some companies production like Netflix. The main purpose is to ensure a very high-level viewing experience and fully respect the director’s wishes, both from the point of view of performance and technical characteristics.

Among the key points are the resolution, which must be at least 3840×2160, a 10-bit color depth. And a pixel brightness that can provide clear and legible images. Currently, only a few brands can boast compliance with these requests, and only for some models. It will still need time to take hold and define itself as a standard in all respects.

Are 4K and 4K OLED the same thing?

Absolutely not. And the difference is felt, especially in terms of brightness and richness of color. Unlike the normal 4K, screens 4K OLED, an acronym stands for ” organic light-emitting diodes ” or ” organic light-emitting diodes too, “using a completely different technology.

In fact, compared to liquid crystal screens, these particular diodes do not require external lighting but can produce self-illumination, producing their own light. Without the use of external lamps, fragile and foldable displays can therefore be created. On the other hand, the prices of these types of screens are higher. So much so that the production of large TVs is almost prohibitive.

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4K resolution, which platforms broadcast in high quality?

Several channels, satellite services, and streaming platforms transmit content in 4K. Which is essential to enjoy this video standard’s qualities fully. However, these contents are not always included in the basic package, and, in some cases, additional payment or a type of subscription may be required at a higher price than the starting one.

This is Netflix’s case, which provides for viewing such content exclusively in the highest-end subscription. Even Amazon Prime Video offers 4K and Disney + or Sky TV content that the downloadable content on your decoder. It also includes several films and documentaries of high quality included in the Cinema package.

What is the difference between full HD, ultra HD 4k, and HD ready

What is the difference between Full HD, Ultra HD 4K, and HD Ready? Let’s get rid of any doubts about this question thanks to this guide. When you decide to buy a new TV, one of the fundamental parameters to pay attention to and the available size and ports is undoubtedly the definition. But what is the definition of a TV? The definition is nothing more than the resolution of the images. The ability to transmit detailed images on the TV screen; in short, the higher the definition, the sharper, and more detailed the images you will see on the TV.

Now let’s see the difference between Full HD, Ultra HD 4K, and HD Ready. Full HD TVs are currently the best-selling. They allow excellent viewing of images thanks to the screen with 1920 horizontal pixels and 1080 vertical pixels. Generally indicated with 1920 x 1080. Despite this, televisions with 4K Full HD technology have been gaining ground in the market for some time; this technology allows multiplication of pixels and a greater depth and realism of the images.

Thanks to this high number of pixels, the details’ quality is certainly superior and guarantees greater user involvement. For the moment 4K resolution is undoubtedly one of the best on the market. But the prices of the televisions that support it are still very high. Moreover, the films produced with this resolution are still few. So you would risk buying a costly TV and then not fully enjoy its potential. Finally, we see the characteristics of HD Ready: among the three, it is certainly the most obsolete technology.

Difference between UHD and 4K

In recent times we have been bombarded with offers and promotions of TVs and Monitors. Bearing the abbreviations UHD (Ultra HD) and 4K, for this reason, many wonder what the differences between the two standards are.

In reality, both abbreviations indicate a screen’s resolution, more precisely, the number of pixels that make it up. In practice, the higher this number, the greater the definition of the images on the screen. To understand the concept, try to think of every pixel as a dot that creates an image.

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Here are some examples of standards still used

  • 720p (1280 x 720 pixels)
  • Full-HD or 1080p (1920 x 1080 pixels)

Let’s go back now to the question of 4K and Ultra HD. First of all, we need to know that 4K resolution is used in the cinema while Ultra HD resolution on television shows why!

The term Ultra-HD indicates a resolution equal to 3840 x 2160. This generates an aspect ratio equal to 16: 9. Which is the one used by most TVs and monitors on the market.

What is the video resolution?

Result? Ion is an essential characteristic of a video. It means the number of pixels horizontally and vertically. Naturally, the larger it is, the more detailed and clear the picture will be on the video captured on the phone. Manufacturers of TVs, smartphones, and other devices with screens are often limited to specifying. The number of horizontal lines (for example, 720p).

Still, the detailed resolution value is usually written as 720 × 1280. Those. Also, indicate the number of vertical lines. To make life easier for people, more letter abbreviations were invented. It’s easier to remember them and understand what they mean. Let’s deal with all this confusion.

HD resolution (720p, 1280 × 720)

HD – (high definition) translates to high definition. In numbers, this is 1280 × 720 pixels. The term appeared at the beginning of the 21st century. And then it really was high definition. Until now, many TV channels broadcast their picture in this format. But the resolution gave way to more precise ones. Sometimes it doesn’t look good on a big TV screen.

Full HD (1080p, FHD)

Full HD (full high definition) is the next step in increasing video resolution. In Full HD videos, 1920 × 1080 pixels. This resolution provides a picture with a resolution of 2.07 million pixels at a 16: 9 aspect ratio. By far the most popular television format.

2K video (2048p, QHD)

A strange story happened here. In fact, many TV makers and big film companies have jumped to 4K right away. Therefore, people most likely have never seen 2K videos on their TV or smartphone. Most digital cinema projectors used in cinemas are 2K resolution. The number of horizontal lines is 2048 pixels.

This is not true. DCI, the film studio group that develops standards for digital cinema, calls 2K resolution 2048 × 1080. However, displays with this resolution are sporadic. And the 2k monitors that are available on the market are most often 2560×1440.

4K resolution (4096p, Ultra HD)

4Kor Ultra HD (UHD) resolution is one of the most popular video resolution standards in recent years. According to Digital Cinema Initiatives (DCI), 4K is 4096 x 2160 pixels. However, TVs and monitors are often 3840 x 2160 pixels. As you can see, this is slightly less than the full 4K. But since the difference between 4K and UHD is negligible. Or consider the same video resolution. As a result, monitor manufacturers often refer to them as 4K / UHD.

4K video is very clear and rich in detail. The human eye already, practically, cannot distinguish such an image from a picture in life. It would seem that we have reached the ideal! But no matter how it is. Marketers demand even more pixels. And therefore, recently, we are already talking about 6K videos and even 8K. There are already several smartphones that can shoot such a video. True, to watch it without losing quality, you need to buy a TV set for a couple of thousand dollars.

Resolution 6K

This is a transient resolution that is approximately 6000 (6K) horizontal pixels. Some technology manufacturers have already rushed to release TVs with this resolution. But, it seems, the fate of 2K awaits them. The video industry is likely to jump straight to 8K.

Resolution 8K (4320p)

4320p = 7680 × 4320 is commonly known as 8K. You might think 8K is about doubling the number of pixels over 4K. But this is not the case. Since we’re talking about horizontal and vertical lines in the video here, 8K has 16 times more pixels than HD and 4 times more pixels than 4K.

8K video has 33 million pixels (33,117,600 to be exact), up from 3,840 x 2,160 (8,294,400 pixels) in 4K. To get this right, let’s say four 4K TVs are placed on a 4×4 grid. That’s a lot of pixels. And now a little about how phone manufacturers are mocking us. They often choose intermediate resolutions, which are very difficult to attribute to Full HD or 2K.

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