Real 4K UHD Resolution not all UHD TVs are made equal Enjoy vivid details with true RGB pixels on Samsung UHD TVs that offer fully coloured pixels that do not dilute the picture quality or vibrancy3 . 3 For RGBW 4K UHD TVs, only some of the pixels across the screen are Red, Green and Blue - the rest contain a white pixel. RGBW TVs have 25% fewer Red, Green and Blue pixels, which reduces their colour range and resolution capability. | Enjoy sensational contrast with UHD Dimming Samsung's UHD Dimming dynamically fine tunes the deepness of the blacks, and the brightness of the whites, for a picture with sensational contrast. |