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The LG 55 inch Class 4K Smart UHD TV with AI ThinQ® (54.6'' Diag), Model # 55UN7300PUF is both a UHD TV and it also supports HDR. UHD is short for Ultra-High Definition (aka Ultra HD television, Ultra HD, UHDTV, UHD and Super Hi-Vision). 4K and UHD are used interchangeably, but they didn’t start as the same thing, and technically still aren’t. From a viewer standpoint, there isn’t a huge difference, and the short answer is that 4K is sticking, and UHD isn’t. The simplest way of defining the difference between 4K and UHD is this: 4K is a professional production and cinema standard, while UHD is a consumer display and broadcast standard. The term “4K” originally derives from the Digital Cinema Initiatives (DCI), a consortium of motion picture studios that standardized a spec for the production and digital projection of 4K content. In this case, 4K is 4,096 by 2,160, and is exactly four times the previous standard for digital editing and projection (2K, or 2,048 by 1,080). 4K refers to the fact that the horizontal pixel count (4,096) is roughly four thousand. The 4K standard is not just a resolution, either: It also defines how 4K content is encoded. Ultra High Definition, or UHD for short, is the next step up from what’s called full HD, the official name for the display resolution of 1,920 by 1,080. UHD quadruples that resolution to 3,840 by 2,160. It’s not the same as the 4K resolution made above — and yet almost every TV or monitor you see advertised as 4K is actually UHD. HDR, or high-dynamic range is a feature on UHD TVs that support it that offers brighter highlights and a wider range of color detail, for a punchier image overall. Many HDR TVs also have wide color gamut, resulting in deeper, richer colors with content that supports it...^IFV
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