Hisense U7S Pro vs TCL C7L

Let's start with the fact that the U7S Pro is an impressively bright television. In calibrated mode our measurement equipment indicated a staggering 2,200 nits of peak brightness. This is an outstanding result, especially given that this model is positioned more as a mid-range set. However, as we know, peak brightness on test patterns is one thing and real film scenes another. Unfortunately, in actual video material the backlight output drops noticeably. Admittedly, in the most demanding moments the TV can still exceed 1,000 nits, which is still a great result and fits the mastering standards of most HDR films, but aggressively tuned local dimming algorithms turn out to be the real challenge. Because of them, small bright details, such as stars or the moon in a night sky, are noticeably dimmed. The TV tries to maintain deep blacks at all costs, which is understandable, but unfortunately this comes at the expense of the dynamic impact and the brightness of the HDR effect. The colour reproduction is worth praising. The new U7S Pro is a QLED design that provides very wide colour gamut coverage. Unlike last year’s model (U7Q Pro), this year’s variant is a 'true' QLED rather than a solution based on a PFS filter. As a result, colour saturation has increased noticeably and coverage of the most demanding BT.2020 colour space has exceeded 81%.

The TCL C7L is, without doubt, an extremely bright TV. In synthetic tests using static test patterns it can reach peak brightness of around 2800 nits. That's a truly phenomenal result, given the price bracket it occupies. Unfortunately, measurements with real film scenes are not as spectacular as the white-square tests. Brightness in real HDR footage on the C7L falls to around 1200 nits. That's still very good, because the vast majority of modern films are graded to that level. However, when small, pinpoint elements appear on screen, the brightness of those details drops dramatically, even to around 400 nits, which reduces the HDR impact. The TV does this deliberately to preserve black levels and avoid excessive blooming. This is somewhat understandable, but it also shows that Mini LED technology is not completely without compromises in this respect. As for the HDR effect itself, alongside brightness the key factor is, of course, colour. Thanks to the use of new 'super' quantum dots, the colours are simply superb and among the best on the market. The TV is able to achieve very wide coverage of the BT.2020 and DCI-P3 colour gamuts, matching the best RGB Mini-LED screens with ease. Best of all, the C7L can maintain such high colour saturation regardless of the scene being displayed, which is often problematic in competing RGB Mini-LED TVs.

We tested the U7S Pro, as we always do, in the best factory-calibrated picture mode, namely Filmmaker Mode. The colours on display can be judged in two ways. The most disappointing was the preset intended for viewing SDR content, that is conventional television, YouTube and other less demanding material. The image there was noticeably yellowish, which turned out to be a direct consequence of an incorrectly set white balance. As our graphs show, this was due to a large deficiency of the blue component, which drastically affected the overall colour temperature. You can see this clearly on the ColorChecker charts and on the colour gamut plots themselves, where most samples shifted towards yellow. Fortunately the factory HDR mode performed much better; there the colour errors hovered around a Delta E of 3, which is already a very solid result.

When it comes to out-of-the-box colours, what's new in TCL TVs, including the C7L model, is the addition of a picture mode called Filmmaker Mode. This is significant because such a mode was not previously available from this manufacturer. As the name suggests, this setting is meant to present the picture with the filmmaker's full intent. After our tests we can confirm that it is, without doubt, the best built-in mode on this TV if you want faithful colour reproduction straight out of the box. However, we certainly wouldn't say it's perfect. Like most devices on the market, this C7L also had some factory calibration errors. The white balance in Filmmaker mode drifted towards a slightly greenish-yellow tint, caused mainly by an excess of the green component and a noticeable shortfall in blue. Of course, this won't be a major drawback for the average viewer, but if you care about perfect whites, natural skin tones and getting the full potential out of the structure of those new "super" quantum dots, the TV really needs professional calibration.

We know, however, that the company Hisense is capable of much more – as previous generations have demonstrated – which is why we couldn't simply overlook the factory shortcomings of the U7S Pro model in everyday content. As is often the case, the television underwent professional calibration. The conclusions? This process brought about a colossal change. After manually adjusting the white balance and supplementing the deficiencies in the blue component, the annoying yellow tint disappeared as if by magic. White became naturally pure, and skin tones gained the appropriate, healthy hue. Importantly, calibration not only tamed the capricious SDR mode but also allowed us to extract the maximum potential from the panel, reducing average colour reproduction errors to levels nearly imperceptible to the human eye. The only thing we must criticise after the whole process is the very nature of the Mini-LED backlight and its specific interaction with the HDR signal. The aggressively tuned local dimming algorithms significantly interfere with the EOTF brightness curve. As a result, the backlight does not always work perfectly with the creator's intention – depending on the scene being viewed, the curve can noticeably deviate either above or below the reference, which at times disrupts the ideal dynamics of HDR imagery.

After professional calibration we managed to greatly improve the situation in the factory Filmmaker Mode. After our corrections, the errors in the ColorChecker test and across the wide colour gamut fell below the threshold of human perception, that is below a value of 3, which is a very good result. The TCL C7L definitely benefits from such a procedure in terms of colour fidelity, and it's hard to deny. Brightness management for HDR content looks a little worse after calibration, though. As I described earlier, even though we set this model up correctly, when you play real film scenes the TV can handle its brightness in a rather peculiar way. It often brightens some elements on screen contrary to the creator's intent, which is clearly visible in the EOTF traces measured from specific films. Despite this defect, or rather a specific characteristic of the television, one thing you can't fault is that after calibration the C7L was able to reproduce colours accurately.

The digital processing of lower-quality signals is of a very high standard here, all thanks to the MediaTek Pentonic 800 processor used in the U7S Pro. Upscaling itself also performs very well, meaning the TV's ability to lift lower-resolution sources to 4K is strong. We didn't notice any unnatural, sharp contours on the screen, and our test image featuring a model simply looked attractive.

This can be seen as, to some extent, the Achilles' heel of the C7L. Unfortunately, this TV uses the older MediaTek Pentonic 700 chip, which has never been famed for outstanding digital image processing. You can clearly see that in the behaviour of the progressive smoothing function, the feature responsible for reducing jagged edges and removing digital noise. It simply performs very poorly. When set to low, its effectiveness is almost non-existent. The only small plus is that the algorithm does not further spoil the picture or blur details unnecessarily. Upscaling, that is scaling lower-resolution content to 4K, performs slightly better. It is simply adequate and does not stand out against the competition. There is no denying that the C7L would benefit greatly in this regard if the manufacturer opted for the newer Pentonic 800 processor, which is now appearing in an increasing number of rival models.

Hisense U7S Pro uses a panel with a maximum refresh rate of 165 Hz at 4K, and in game mode it can even reach 330 Hz at Full HD. However, it's worth remembering that these top figures matter little in everyday use, because most content is limited to a maximum of 120 Hz (for example when playing on a console). Even so, the TV handles motion quite well and performs very respectably for an LCD design.

It's hard to fault the smoothness itself. In the menu you'll find a motion smoothing feature called "Motion Enhancement", which hides two sliders: blur reduction and judder reduction. These allow manual configuration of the smoother, which works well for both films and sport, effectively improving the raw TV signal.

The TCL C7L uses a native 4K panel with a 144 Hz refresh rate, which at lower resolutions when connected to a PC can even reach up to 288 Hz. These are, of course, very high figures and impressive on paper, but bear in mind that almost all the dynamic content you’ll watch on this TV will still run at around a maximum of 120 Hz. To rein in that motion, the TV’s menu includes a motion-smoothing system called "Motion Clarity". It offers several preset modes, including a user mode that we strongly recommend you set manually using our tried-and-tested guides on our YouTube channel. There are two key sliders available. The first, "Blur Reduction", is responsible for cutting motion blur and improving sharpness in dynamic 60-fps material, such as sports broadcasts. The second slider, "Flicker Reduction", lets you add artificial frames to films and series shot in cinematic 24 or 30 frames per second. This, of course, can completely eliminate the irritating judder that appears during camera movement.

If you plan to connect a console or PC to the U7S Pro, you'll be more than satisfied. This TV is excellent for gamers. Hisense didn't spare any expense and fitted it with four HDMI 2.1 ports with full 48 Gbps bandwidth, so you don't need to juggle cables, as each port supports the full feature set. It offers automatic low-latency mode (ALLM) and VRR, which operates across a wide range from 48 Hz up to a whopping 330 Hz. Of course, that 330 Hz is for now a bit of a gimmick for owners of powerful PCs, since consoles will still be limited to 120 Hz, but it's good to have that headroom for the future. The Game Bar is also very useful while gaming. It's a handy on-screen menu for players where, without leaving the main TV settings, you can quickly change picture mode, enable a crosshair in the centre of the screen, or even switch to an ultra-wide display aspect, which PC simulator fans will appreciate. The only drawback to be aware of is an incorrect implementation of the HGiG standard in games. The TV ignores the console's HDR10 instructions and keeps forcefully altering the image in an attempt to "improve" it, which makes proper HDR setup in the console menu (where you set brightness using the symbols/checkerboard pattern) somewhat more awkward.

When it comes to gaming, the TCL C7L is simply an outstanding TV for players. Thanks to two HDMI 2.1 ports with full 48 Gbps bandwidth, you get access to all the key features required by console owners and powerful PC rigs. There’s a well-working ALLM mode with very low input lag and VRR frame synchronisation that operates over an impressive range from 48 to 288 Hz. Importantly, unlike some rivals, TCL has properly implemented the console HDR10 HGIG profile and supports Dolby Vision in games. The package is completed by a very well designed gamer panel, the Game Bar, which even lets you edit its appearance and change the theme so it perfectly matches the style of your console.

The only thing you can, and even should, criticise is that the TV offers only two full-spec HDMI 2.1 ports, while the other two are older HDMI 2.0. That creates quite a logistical problem. Why? Because one of the fast ports also handles the return audio channel eARC. In practice this means that if you connect a soundbar or home cinema system to the TV, you’ll be left with just one free HDMI 2.1 socket. If you have two consoles at home, or a console and a powerful PC, unfortunately you’ll have to give something up or keep juggling cables at the back of the case while trying to maintain convenient control of the audio system.