TCL C7K / QM7K 55"-85" vs TCL C7L

In terms of brightness, the models from 55 to 85 inches in the C7K series are truly impressive. In the best testing conditions, the 65-inch screen achieved over 1200 nits, which practically means that the brightest scenes can dazzle with almost cinematic brilliance. These are not just dry numbers from measurements – during screenings, white skies, explosions, or light reflections on water looked incredibly striking, often giving the impression that the television exceeds its price class. This is particularly effective in scenes with a large area of illumination, where the screen is filled with intense brightness – such as in sun-drenched shots or during dynamic action sequences. Viewers looking for strong HDR will definitely be satisfied.

However, scenes requiring precise control of backlighting – with small points of light on a dark background – are more challenging. Here the C7K, despite having over a thousand zones, can still dim brightness to maintain deep blacks. The effect is that in films like Sicario 2 or Life of Pi, some details, such as a distant lantern or single reflections, can be less defined or blend in with the surroundings. This is a compromise inherent to MiniLED technology – it provides excellent image depth and blacks at a level that ordinary LCDs do not offer, but this comes at the cost of limited visibility of the smallest lights.

TCL C7L is undoubtedly an extremely bright television. In synthetic tests on static images, it can achieve peak brightness levels of around 2800 nits. This is an absolutely phenomenal result, considering the price range it falls into. Unfortunately, the tests with real film scenes are not as spectacular as the measurements of white squares. The brightness in actual HDR shots drops to around 1200 nits in the C7L model. This is still a very good result, as the vast majority of contemporary films are mastered at such a value. However, when small, pinpoint elements appear on the screen, the brightness of those details drastically drops – even to about 400 nits – which diminishes the HDR effect somewhat. The television does this intentionally to maintain a better level of black and prevent a huge glare of light. This is somewhat explainable, but it also shows that Mini LED technology is not completely uncompromising in this regard. As for the HDR effect itself – alongside brightness, colors are obviously key here. And these, thanks to the use of new, "super" quantum dots, are simply outstanding and among the best on the market. The television can achieve around 90% coverage of the ultra-wide color gamut BT.2020 and 99% of the DCI-P3 gamut, easily matching the best RGB MINI-LED screens. Best of all, the C7L can maintain such high color saturation regardless of the scene being displayed, which is often problematic in competing RGB Mini-LED televisions.

The novelty in TCL televisions for 2025 is the long-awaited Filmmaker mode, which until now could be found in most competitive brands. This is great news because this mode is considered the most faithful to the original vision of the creators and is often recommended by enthusiasts of good picture quality. Unfortunately – as is often the case – the mere presence of this mode does not guarantee perfection. The Filmmaker mode in the TCL C7K is not free from flaws. One could point out the incorrect white balance, particularly the slight dominance of blue, which led to cool, somewhat grayish skin tones. But that was not the biggest problem. The main complaint was excessive brightness exposure, which is clearly visible in the gamma and EOTF charts. The image was simply too bright, at times almost blown out, which affected not only the depth of scenes but also the overall viewing experience. Some details were simply lost, and the whole image looked as if someone had slightly overdone the brightness slider. As always – we decided to see what could be squeezed out of this after calibration. And that’s when things started to get really interesting…

When it comes to colors straight out of the box, what's new in TCL TVs, including the C7L model, is the addition of a picture mode called Filmmaker Mode. That's significant because until now that mode wasn't available from this manufacturer at all. In theory, as the name suggests, the image in this setting is meant to represent the filmmaker's full intent. From our tests we can confirm that it's without a doubt the best built-in mode on this TV if you care about faithful color reproduction right out of the box. However, we wouldn't say it's perfect. Like most devices on the market, this C7L also had some factory issues. The white balance in Filmmaker Mode tended toward a slightly greenish-yellow tint, caused mainly by an excess of the green channel and a noticeable lack of blue. For the average viewer this won't be a drastic flaw, but if you care about perfect whites, natural skin tones, and getting the full potential out of the structure of these new "super" quantum dots, the TV really begs for professional calibration.

After calibration, the TCL C7K showed itself in a really good light, especially when it comes to SDR content. We managed to tune the white balance, color gamut, and brightness characteristics so precisely that color errors on the ColorChecker palette dropped below a value of 2. For the uninitiated – this is almost a perfect result, which means that the image is very close to what the creators intended. Unfortunately, it looked worse with 4K HDR content. Although we were able to slightly calm the white balance and correct its previous errors, it is still evident that the television has some "MiniLED traits," especially in brightness management. When we checked how the C7K handles the EOTF curve on actual film scenes, and not just on synthetic test patterns, it turned out that the screen still tends to slightly brighten the entire image. This affects the overall experience – black loses some depth, and the image becomes less contrastive than it should be. Despite these minor shortcomings in HDR content, the overall reception of materials – especially in SDR – is really very good. After calibration, the C7K can display an image that can successfully compete with much more expensive models. Good color tuning, natural skin tones, and pleasant brightness make movie sessions and everyday content viewing more than satisfactory.

After a professional calibration we were able to greatly improve the out-of-the-box Filmmaker Mode. After our adjustments, errors in the ColorChecker test and across the wide color 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 this treatment in terms of color accuracy, and that's hard to argue with. A bit worse, however, is the issue of brightness management in HDR content after calibration. As I described earlier, even though we set this model up correctly, when you play real movie scenes on the TV it can manage its brightness in a rather peculiar way. It often brightens certain elements on the screen contrary to the creator's intent, which can be clearly seen on EOTF charts measured in particular films. Despite this flaw, or rather a specific quirk of this TV, you can't take away one thing: after calibration the C7L was able to reproduce colors accurately.

TCL C7K features a function that, according to the manufacturer, is supposed to smooth out unwanted color transitions – something like a rescue for less successful tonal changes. It's called "Gradual Smoothing" and... well, it sounds ambitious, but in practice, it works very poorly. Regardless of whether we set it to low or high, the difference is minimal. Worse still – the function can cut out elements from the image that should remain. Fortunately, film grain remains untouched, so at least it doesn't smooth everything indiscriminately, but still – it's better to just turn this option off.

When it comes to scaling lower-resolution content, it's already better. SD and HD materials look quite decent, although sometimes we felt that the image loses sharpness and becomes too soft – as if something took away its clarity. Fortunately, with very low sources (e.g., 576p), there was no overscan effect, meaning the image was not artificially cropped – everything fit on the screen as it should.

This point could, in a sense, be called the Achilles' heel of the C7L. Unfortunately, this TV uses an older MediaTek chipset, the Pentonic 700, which was never known for outstanding digital image processing. You can clearly see this in the operation of the gradual smoothing function, which is responsible for reducing jagged edges and removing digital noise. It simply performs very poorly; when set to low, its effectiveness is practically nonexistent. The only small plus is that the algorithm doesn't further degrade the image or forcefully blur details. Upscaling itself, meaning the scaling of lower-resolution content to 4K, performs a bit better. It's simply adequate and doesn't stand out compared with the competition. That said, there's no denying the C7L would gain a lot in this area if the manufacturer decided to use the newer Pentonic 800 processor, which is now appearing in an increasing number of competing models.

The TCL C7K handles motion fluency really well. The panel used in it offers a refresh rate of 144 Hz, which in itself suggests that this TV is something more than just an ordinary "60 Hz" panel. Moreover, if we connect the C7K to a computer and set the resolution to Full HD. But we'll write more about that in the paragraph about gamers and PC collaboration. Back to everyday use – both sports and movies look very good here. Thanks to the fast panel and well-functioning motion smoother, the C7K is great for watching matches, but also for movie screenings. In the menu, we find two sliders – blur reduction and flicker reduction – which allow you to tailor the smoothness effect to your own preferences. At lower settings, we get a more cinematic effect, with a slight stutter in motion. At higher settings – the image becomes more theatrical, smooth to the point of exaggeration. Everyone can set it up according to their liking.

The TCL C7L uses a native 4K panel with a 144 Hz refresh rate, which, at lower resolutions when using a PC, can even reach up to 288 Hz. Those are obviously very high numbers and look impressive on paper, but in everyday use it's worth remembering that almost all dynamic content you play on this TV will still run at around a maximum of 120 Hz. To tame that motion, the TV's menu includes a motion smoothing system called "Motion Clarity." It offers several predefined modes, including a user mode that we strongly recommend setting manually using our tried-and-true guides on our YouTube channel. There are two key sliders available there. The first, "Blur Reduction," reduces smearing and improves sharpness in dynamic 60-fps material, such as sports broadcasts. The second slider, "Flicker Reduction," lets you add artificial frames to movies and TV series shot at cinematic 24 or 30 fps. This, of course, allows you to completely eliminate the annoying image judder during camera motion.

TCL C7K is a television that on paper looks like the dream equipment for gamers – and most importantly, it holds up well in practice. First, the good news: we have two full-bandwidth HDMI 2.1 ports, so we can easily connect both a console and a computer, taking full advantage of their capabilities. The panel itself supports a refresh rate of 144 Hz, which provides a significant advantage in dynamic games. Additionally, it comes with a full suite of gaming features: VRR (variable refresh rate), ALLM (automatic low latency mode), and support for Dolby Vision in games. There's also an HGiG mode that allows for HDR effects consistent with the creators' intentions. GameBar, which is an informative bar for the gamer. It operates quickly, looks clear (like the Nintendo console👌), and shows what’s most important: the current frame count, VRR status, and even HDR parameters.

When it comes to gaming, the TCL C7L is simply an outstanding TV for gamers. Thanks to two full-bandwidth HDMI 2.1 ports at 48 Gbps, you get access to all the key features required by console owners and users of powerful PCs. It has a well-implemented ALLM mode with very low input lag and VRR frame-sync that works in an impressive range from 48 to 288 Hz. Importantly, unlike some competitors, TCL implemented the console HDR10 HGIG profile correctly and added support for Dolby Vision in games. Rounding out the package is a very well-designed player panel, the Game Bar, which even lets you edit its appearance and change the theme to perfectly match your console’s style. The only thing you can — and should — criticize is that the TV offers only two full HDMI 2.1 ports, while the other two are older HDMI 2.0. That creates a fairly significant logistical problem. Why? Because one of those fast ports also supports eARC (enhanced Audio Return Channel). In practice, that means if you connect a soundbar or a home theater system, you’ll only have one free HDMI 2.1 port left. If you have two consoles at home, or a console and a powerful PC, you’ll unfortunately have to give something up or constantly juggle cables at the back while trying to maintain convenient control of your audio system.