Hisense UR9S is undoubtedly 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. However, it is important to clearly separate laboratory results from filmic realities. In real material the UR9S behaves much more... restrained. Maximum brightness peaks in balanced scenes hover around 1500 nits. In demanding, dark shots, where algorithms must at once maintain deep black 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 the conservative behaviour of the local dimming system. When a bright object occupies a large part of the frame, the system can easily sustain a high brightness. But in night scenes the priority becomes protecting black and combating the halo effect (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, immersive HDR effect that impresses in bright, spectacular sequences.
Colour gamut coverage
On test patterns the Hisense UR9S performs excellently in terms of colour. Its coverage of the DCI-P3 gamut is almost 100%, and the wide BT.2020 as much as 93%. Those are results even the best QD-OLED TVs do not achieve. But again, synthetic measurements are one thing, films and series another. In real-world scenes the figures fell 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 claim in their marketing materials. One could even say that currently their capability is similar to TVs equipped with quantum dots, the so-called QLED. So why does this happen? To a large extent colour reproduction here depends on the specifics of how the backlight zones operate. When a strongly saturated colour sits next to white or another, more complex element, a single zone has to handle both parts of the picture at once. Under those conditions the backlight cannot maintain extreme saturation of a given colour on screen, because the emitted light takes on a more white-like character. 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.
The biggest limitation of the TCL P7L in HDR is simply brightness. The TV does not have much luminance headroom, so strong highlights, the sun or small light sources can't clearly 'pop' out of the picture. As a result, even well-produced HDR material looks fairly restrained and, in terms of dynamics, is closer to good SDR than to what brighter models show. That does not mean the P7L completely fails at HDR. The issue is primarily a lack of backlight power.
Looking at colours, the situation is a little better. The TV covers around 91% of the DCI-P3 gamut and about 68% of the wide BT.2020 colour space, so for this price class the colour range is quite respectable. TCL markets this model as QLED, although the nature of the solution used is closer to backlighting that uses a PFS phosphor than to a classic quantum-dot layer. What matters most to the viewer, however, is the effect: more saturated colours are on offer.