The Hisense UR9S is without a doubt a show of strength from the Chinese manufacturer when it comes to luminance. On a synthetic test pattern the panel reached as much as 2600 nits, which is an impressive result. But you have to clearly separate lab results from film realities. In real material the UR9S behaves much more restrained. Peak brightness in balanced scenes hovers around 1500 nits. In demanding, dark shots—where the algorithms must at the same time preserve deep blacks and precisely light small details—brightness can drop drastically, even down to around 400 nits. The gap between the chart and reality is therefore huge. This is a direct consequence of conservative local-dimming behavior. When a bright object occupies a large portion of the frame, the system can easily maintain a high luminance. But in night scenes the priority becomes protecting black levels and fighting the halo effect (unsightly glows around bright edges). To avoid degrading contrast, the TV drastically limits its light output. Even so, the UR9S can still produce a very powerful, engaging HDR effect that impresses in bright, spectacular sequences.
Color gamut coverage
On test patterns the Hisense UR9S performs excellently in terms of color. DCI-P3 coverage is nearly 100%, and BT.2020 coverage reaches 93%. Those are figures even the best QD-OLED TVs don't achieve. But again, synthetic measurements are one thing and movies and series are another. In real-world scenes the numbers fell to 93% for DCI-P3 and 81% for BT.2020. That's still great, but the advantage of RGB Mini LED is no longer as dramatic as manufacturers promise in marketing materials. You could even say their capability is now close to TVs equipped with quantum dots, the so-called QLEDs. Why does this happen? Largely, color reproduction depends on how the local dimming zones operate. When a highly saturated color appears next to white or another, more complex element, a single zone must handle both parts of the image at once. Under those conditions the backlight cannot maintain extreme saturation of a given color on the screen, because the emitted light takes on a character closer to white. Hisense refined this quite well in the UR9S, but still not enough for the TV to sustain such high color saturation in every situation.
LG MRGB85 offers moderate brightness. On test patterns it reaches about 700 nits, which by itself is a decent result. In actual movie scenes the values are lower and most often fall between 400 and 600 nits. Bright, expansive shots perform best. In scenes with a lot of black the TV noticeably limits luminance, trying to maintain the highest possible contrast. The HDR effect is therefore visible, but it is far from the level offered by more advanced Mini-LED designs. Especially in darker parts of films the limitations of edge-lit backlighting and imprecise local dimming become noticeable again.
HDR Colors
A much stronger suit of the MRGB85 is its colors. The TV covers about 95% of the DCI-P3 color space and 74% of BT.2020, allowing HDR material to look vivid and striking. Colors are well saturated, and the difference compared with basic LCD TVs is clearly visible. It is worth noting, however, that this is not a classic RGB backlight, where each of the three primary colors is generated by a separate diode. Red is produced by a PFS phosphor, which expands the palette and yields more saturated red shades. This solution works well for color reproduction, but it does not change the limitations of dimming itself. The LEDs 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!