A:Answer Well for starters, in the TV world, 4K and UHD (or Ultra HD) are more or less interchangeable terms. 4K TVs have a greatly increased number of pixels in their screen, resulting in higher resolution, 3840 x 2160, a significant step up from Full HD TV at 1920 x 1080. 4K TVs with all those extra pixels definitely show much greater detail but the next step in enhancing images for 4K resolution is to address the all-important issues of contrast ratio. And that’s where HDR technology steps in. OK then. So what is HDR? HDR is an acronym for ‘High Dynamic Range’. This is really all about the expression of images and is a result of the depth of contrast between light and dark colors that a TV screen can produce. Or as the name directly states, the range of luminance that a television screen is able to render. HDR 1000 is Samsung’s HDR advanced feature that harnesses the available brightening and dimming technology’s power to make blacks look really deeply dark and whites vibrantly bright. HDR 1000 is incredibly bright with the ability to produce images at up to 1000 nits. It’s the difference in brightness and contrast that actually ends up being perceived by humans as a superior image. So when you combine 4K resolution and HDR 1000 in one TV you get a powerful package—pixels to boot and the ability to produce optimized images of quality far beyond your non-4k TV.