Hisense UR9S is without doubt a show of force from the Chinese manufacturer when it comes to luminance. On a synthetic test pattern the panel hit as much as 2600 nits, which is an impressive result. But it’s important to clearly separate laboratory results from filmic realities. In real-world content the UR9S behaves much more restrained. Peak brightness in balanced scenes hovers around 1500 nits. In demanding, dark shots, where algorithms must both preserve deep blacks and precisely light small details, brightness can fall drastically, even to around 400 nits. The discrepancy between the chart and reality is therefore huge. This is a direct consequence of conservative local dimming behaviour. When a bright object occupies a large part of the frame, the system can easily maintain a high brightness level. However, in night scenes the priority becomes protecting blacks and fighting halo artefacts (unsightly glows around bright edges). To avoid contrast degradation the TV drastically limits light output. Even so, the UR9S can still produce a very powerful, engaging HDR effect that impresses in bright, spectacular sequences.
Colour gamut coverage
On test patterns the Hisense UR9S performs excellently in terms of colour. DCI-P3 coverage is almost 100%, and the wide BT.2020 as much as 93%. Those are figures even the best QD-OLED TVs don't reach. But again, synthetic measurements are one thing, films and series are another. In real-world scenes the figures dropped to 93% for DCI-P3 and 81% for BT.2020. That’s still a great result, but the advantage of RGB Mini LED is no longer as dramatic as manufacturers promise in marketing materials. One could even say their capability is now close to that of quantum-dot-equipped TVs, the so-called QLEDs. So why is that? To a large extent, colour reproduction here depends on the way the backlight zones operate. When a strongly saturated colour appears next to white or another, more complex element, a single zone must handle both parts of the image at once. Under such conditions the backlight can't maintain extreme saturation of a given colour on the screen, because the emitted light takes on a character closer to white. In the UR9S this has been refined quite well, but still not enough for the TV to maintain such high colour saturation in every situation.
LG MRGB85 offers moderate brightness. On test patterns it reaches around 700 nits, which is a decent result in itself. In real movie scenes, however, values are lower and most often fall in the 400 to 600 nits range. Bright, wide shots look best. In scenes with large areas of black the TV noticeably reduces luminance, attempting to keep contrast as high as possible. The HDR effect is therefore visible, but it is far from the level offered by more advanced Mini-LED designs. Particularly in darker parts of films, the limitations of the edge-lit backlight and imprecise local dimming become apparent again.
HDR colours
A much stronger suit of the MRGB85 is its colour. The TV covers around 95% of the DCI-P3 colour space and 74% of BT.2020, so HDR content can look vivid and impressive. Colours are well saturated, and the difference compared with basic LCD TVs is clearly noticeable. It is worth noting, however, that this is not a classic RGB backlight, where each of the three primary colours is generated by a separate diode. Red is produced by a PFS phosphor, which expands the palette and achieves more saturated red tones. This solution performs well for colour reproduction, but it does not change the limitations of the local dimming. The diodes are not driven independently in the way the series name might suggest... so it turns out that Mini RGB is not the same as Mini-LED RGB!