![]() ![]() High Dynamic Range dramatically extends the contrast range between the brightest white highlight and darkest black areas on the screen for astonishing brightness and striking contrast without loss of detail. "Ultra High Definition has an impressive 8 million pixels, with 4x the detail of 1080p for sharper detail in every image, but High Dynamic Range (HDR) expands the image’s range of contrast and color volume, delivering a difference in picture quality you can easily see. ![]() Angulo why HDR is such an important part of today's 4K/UHD experience. Vizio is one of the few companies that offers HDR throughout their entire 2018 4K/UHD models-from their entry level D-Series to their flagship P-Series Quantum. To get under the hood, I spoke with Carlos Angulo, Director of Product Marketing for Vizio about the importance of HDR in today's displays. HDR actually enhances the performance of other technologies in 4K/UHD displays. But HDR is, in fact, more than just contrast. In a nutshell, high dynamic range drastically increases the contrast between the brightest whites and darkest blacks without any loss in detail. High Dynamic Range: 4K/UHD TV's Secret Sauce Now, let's look at the secret sauce that ties everything together: HDR. The benefits of improved resolution and wide color gamut are easy to understand. Finally, fire trucks will look fire truck red and Coke cans will resemble the real thing. The benefit of watching UltraHD content is that you'll be able to experience a far wider spectrum of colors that look more true-to-life. For example, that third triangle, labeled P3, is the color space that most commercial movies in cinema are mastered to. While BT-2020 offers a lot of color opportunity, most content today is using only a fraction of it. A TV with wide color support is therefore far closer to capturing all the colors the average person experiences each day. The BT-2020 standard encompasses 75% of the colors humans can see. Today's 4K/UltraHD TVs and UltraHD Blu-rays, by contrast, are able to display content that has goes beyond REC709. That's why you've probably noticed some colors on your Blu-rays or HDTV programming-especially greens and reds-aren’t as vibrant as real life. HD television programing and Blu-rays were all mastered to the REC709 specification. Good old HD televisions were able to display colors that conformed to the REC709 color gamut, which is roughly 30% of the human visual system. The color spectrum below shows a representation of colors the average human visual system can see. While we'll give a nod to other technologies that make up other UHD specs, like high frame rate, there's no question that wide color gamut and HDR are probably the most critical. Here at Audioholics, we believe that the two most important standards are BT-2020 (wide color gamut) and SMPTE-2084 (HDR). UltraHD refers to a complementary set of standards and features differentiating today's TVs from their predecessors. ![]() Rather, the real benefit lies in the broader technologies that make up the UltraHD part of the 4K/UHD equation. The importance of 4K/UHD isn't just about increasing total pixels (1920x1080 vs 3840x2160). The importance of 4K/UHD isn't just about increasing total pixels. ![]()
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