All you need to know about HDR for TV

In the world From new TVs, goal goals always move. Once you feel safe that boasts a new group, another reason for operation comes. First there was 3D. Then 4K. Let’s not forget the Old and quantitative points, then the cheapest 4K and the cheapest OLED. This year is not an exception, with another new technology that offers another reason for your horse. It is called HDR, which is short for the “high dynamic range”.

HDR does not revolve around the additional pixel units. Each group is able to handle HDR video can already display 4K video. Instead, HDR creates widely changing photos and darkness looks better on your screen. it’s great! You want it completely. But like most emerging technologies, the barriers abound for the first adoption. From high prices to the scarcity of video sources, there are many things to consider before buying HDR.

What is HDR video?

If the “HDR” abbreviation looks familiar, it’s because you saw it as a preparation in the smartphone camera. The results are not great, which means you may think HDR is absorbing. For photography, HDR is an alternative solution (if it is excessive use) for a common problem: it highlights the details in the light and The dark areas of the scene, usually by taking multiple pictures in the exposure and integration of different. The problem is, such pictures often Looks shattered with identity and fake.

Video HDR different. It looks very realistic, with gradients and nuances closer to what appears in real life. It can become bright enough to simulate light that is reflected in the chrome and dark enough to look like an oil spot. Either way, you still see fine details and fine shades. HDR is not fake to contrast with stupid filters and exotic aura effects. Instead, he uses new panel techniques with a wider color palette at a concert with specially encrypted video.

For this reason, you need a specific type TV to watch the HDR video properly, and you also need a specific video source. In the best case scenario, you will see deeper and more accurate colors, and the lighting effects will appear similar to life.

How are HDR TVs mainly different?

HDR is not associated with a specific type of display technique, but almost all HDR groups are shared so far in some features. Vizio, Sony, Samsung, Panasonic, LG, TCL and Hisenesse have HDR TVs that are basically 4K LCD TVs. These groups can get truly Bright — bright enough that looking at the sun or explosion on the screen can make you a challenge. Backlighting systems for these panels up to more than 1000 Note— By comparison, most HDTVs LCD put about 300 or 400 groups. Why is very bright? With such high peak brightness, the contrast between light and dark (or light and lighter) in the scene is more clear.

Also, most HDR TVs are not OLED groups. They use LCD panels, where they can get brighter than OLEDS. However, since OLEDS does not have rear lighting systems (each pixel is turned on and stopped individually on OLED) they can get much darker, and thus produce deeper black. Earlier this month, LG and Panasonic announced the new 4K OLED TVs that can view the HDR video.

What about colors? Are they better on HDR TVs?

Yes! There are more colors on high -end 4K TVs.

This is because both content and TV devices exceed the color space and the depth of the Bit from the traditional HDTVS. To display colors, HDTVs is committed to the 25 -year -old specifications called RC. 709. It is a recommendation of a colored area of ​​8 bits presented by a television group. It is old like Windows 3.0 and the first season Simpson family. It is old, and has been supported throughout the entire HDTV era. Now we have new specifications: 4K TVs and content will target RC from 10 to 12 bits. 2020 color space, which represents more than 60 times the number of distinctive color collections such as RC. 709. More than a billion of them, in fact. Recommendation. 2020 GAMUT color is wider than the specific DCI-P3 color space for displaying professional digital displays (which are also much wider than RC. 709).

From photography to mastering to distribution to show, we talk about a comprehensive pipeline to the end producing a much better image. The content can be mastered to take advantage of a wider color space, and additional descriptive data is classified into a TV capable of HDR to determine how they look, color refining techniques like Quantum points It can help her in the width accurately. It will be a combination of 4K resolution, severe brightness, improved contrast, and more colors is what makes HDR look amazing — even if the HDR trick itself is part of the sauce only.

O man, how do I make sure that my new TV does all this?

There is a badge now! The UHD alliance, a group of TV manufacturers, content providers, and distribution companies, will start to issue a conclusion of approval on “Ultra HD Premium” TVs for some TV devices. These badges will be dedicated to “Five Players of Tools” in the world of TV, and provides a set of Tack-SHARP resolution, high dynamic range and very wide colors.

To qualify, the TV must have a width accuracy of at least 3840 x 2160 (i.e. 4K), and supports 10 -bit, able to handle the sources that use RC. 2020 color space, and it was able to width at least 90 percent of the DCI-P3 color space. In terms of dynamic range, the Ultra HD premium emblem accommodates LCD and OLED screens. For LCD screens, qualified TV must have a peak brightness level above 1000 February and a black level less than 0.05 networks. In order to qualify OLED, he must have a peak of brightness at least 540 windows (remember, OLEDS cannot become very bright) and a black level less than 0.0005 February (remember, OLEDS can become very dark).