TCL C7K / QM7K 55"-85" vs LG NANO81A / NANO80A

In terms of brightness, the models ranging from 55 to 85 inches in the C7K series are truly impressive. Under optimal testing conditions, the 65-inch screen exceeded 1200 nits, which in practice means that the brightest scenes can dazzle with almost cinematic brilliance. These are not just dry figures from measurements – during screenings, bright skies, explosions, or reflections of light on water looked incredibly striking, often giving the impression that the television exceeds its price range. This is particularly effective in scenes with large areas of illumination, where the screen fills with intense brightness – for instance, in sun-drenched shots or during dynamic action sequences. Viewers looking for strong HDR will definitely be satisfied.

However, scenes that require precise backlight control – with tiny points of light against a dark background – prove to be 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 lighthouse or single reflections, may appear less distinct or blend into the surroundings. This is a compromise inherent in MiniLED technology – it provides excellent image depth and blacks at a level not offered by standard LCDs, but this comes at the cost of limited visibility of the tiniest lights.

If you're hoping that HDR on the NANO81A will bring tears to your eyes, I have to disappoint you. This TV is just too dark to show what this format is really about. With a brightness of only 250 nits, HDR really only exists on paper here. In practice, during viewing, it's very hard to tell whether we're watching material in high dynamic range or regular SDR – it simply lacks that “punch” of light in the bright parts of the image. But, to balance out the criticism, we do have one light at the end of the tunnel – and quite a distinct one at that. It's about colour gamut coverage. Here, the NanoCell filter shows that it's not just marketing nonsense. Our measurements indicated that the coverage of the DCI-P3 space is around 88%. That's a really solid result, placing this model significantly above typical budget models based on regular white LEDs without any filters. Of course, it still lags a bit behind QLED TVs or advanced panels with PFS filters, but for this price range, the colours are surprisingly saturated and vibrant. It’s just a shame that this low brightness doesn't allow them to fully “spread their wings” with the Nano filter.

The new feature in TCL TVs for 2025 is the long-awaited Filmmaker mode, which until now has been found in most competing brands. This is great news, as this mode is regarded as the one that best represents 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 it does not guarantee perfection. The Filmmaker mode in the TCL C7K is not without its flaws. One could critique the incorrect white balance, particularly the slight dominance of blue, which caused cool, slightly greyish skin tones. But that was not the biggest issue. The main complaint was the excessive brightness exposure, which is clearly visible on the gamma and EOTF graphs. The picture was simply too bright, at times even blown out, which affected not only the richness of the scenes but also the overall viewing experience. Some details were simply lost, and the whole image looked as if someone had overdone the brightness slider a bit. As always – we decided to see what could be squeezed out of this after calibration. And that’s where it started to get really interesting…

For every film fan, the natural choice in LG televisions is the Filmmaker Mode. It is designed to show the image as the director intended – without unnecessary "enhancements". Unfortunately, in the case of our test unit NANO81A, the factory settings left a bit to be desired. The main issue turned out to be the white balance. Measurements revealed a distinct deficiency of blue, which in practice meant that many scenes had a slightly yellowish, even "yellowed" tint. The white wasn’t perfectly clean, which took away the freshness of the image. Additionally, the brightness management wasn't perfect either – the factory-set gamma was too low. The image often appeared oversaturated, as if it had been pulled too much from the shadows, which detracted from its naturalness and depth. Fortunately, LG, even in this relatively low price range, does not block access to advanced settings. The calibration options for this model are extensive, which is a significant plus for those who enjoy "fiddling" in the menu. We decided to approach the matter our way and see how much we could squeeze out of this panel with professional calibration.

After calibration, the TCL C7K put on a really good show, especially when it comes to SDR content. We managed to precisely tune the white balance, colour gamut, and brightness characteristics, resulting in colour errors on the ColorChecker palette dropping below a value of 2. For the uninitiated – this is an almost perfect score, meaning the image is very close to what the creators intended. Unfortunately, things didn’t look as good with 4K HDR content. While we managed to slightly calm down the white balance and correct its previous errors, it still shows that the TV has some "MiniLED traits," especially in brightness management. When we checked how the C7K handles the EOTF curve on actual movie scenes, rather than just synthetic test patterns, it turned out that the screen still has a tendency to slightly brighten the entire image. This affects the overall experience – blacks lose some depth, and the image becomes less contrasty 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 tuning of colours, natural skin tones, and pleasant brightness make movie sessions and everyday content viewing more than satisfying.

After calibration, the NANO81A is a completely different television. What LG offers in terms of image enhancement tools, even in such an affordable model, deserves major credit. We were able to completely eliminate that annoying yellowing of whites and make the colours natural, vibrant, and simply "real". In SDR content (i.e., regular television, YouTube, or older films), the picture now looks miles better – it’s clean, well-balanced, and no longer strains the eyes with strange hues. It’s clear that this panel has significant potential, which is simply wasted out of the box due to poor presets. However, we have one serious reservation that calibration cannot fully overcome – it's about brightness management in HDR mode. The LG algorithm in this model is very conservative. The TV deliberately dims the HDR image to avoid clipping the already weak blacks of the IPS panel. The developers faced a choice: either provide more light and accept that black would become light grey, or dial down the brightness to maintain any contrast. They chose the latter. Despite this, after our adjustments, watching anything on the NANO81 is considerably better.

TCL C7K comes with a feature that, according to the manufacturer, aims to smooth out unwanted colour 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. And worse still – the feature can cut out elements from the image that should remain. Fortunately, film grain is left untouched, so at least it doesn't smooth everything indiscriminately, but even so – it's best to just turn this option off.

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

It often happens that cheap 4K panels ruthlessly expose all the "dirty laundry" and imperfections in lower resolution materials. However, with the LG NANO81A, the situation is completely different. It's a really solid performer when it comes to handling content that's far from ideal. The built-in processor does a great job with upscaling. Even older recordings look quite decent on this screen – the image is coherent, cleaned of digital noise, and simply pleasant to the eye. A big plus is the gradation reduction feature, which you can find in the settings. It is exceptionally effective in combating colour banding, which is a godsend when watching low bitrate materials, such as from some streaming services or older files from the web. However, it is worth maintaining a certain vigilance. Since we are dealing with a less powerful chip than in LG's top models, too aggressive a setting for this option can sometimes result in minor artifacts or slight blurring of details. Despite this risk, I definitely encourage experimentation with this feature – in many cases, it can save the viewing experience and make low-quality material fully watchable.

TCL C7K handles motion smoothness really well. The panel used in it offers a refresh rate of 144 Hz, which alone suggests that this TV is more than just a regular "60 Hz" panel. Moreover, if we connect the C7K to a computer and set the resolution to Full HD. But we will write more about this in the section for gamers and PC compatibility. Returning to everyday use – both sports and movies look very good here. Thanks to the quick panel and the well-functioning motion smoothening feature, the C7K is great for watching matches as well as for movie screenings. In the menu, we find two sliders – blur reduction and flicker reduction – that allow adjusting the smoothness effect to personal preferences. At lower settings, we get a more cinematic effect, with a slight judder. At higher settings – the image becomes more theatrical, smoothly even to excess. Whatever your taste, everyone can set it to their liking.

In terms of motion fluidity, the NANO81A unfortunately has a bit of a hurdle. The television is based on a panel with a refresh rate of 60Hz. If you're looking for perfect sharpness in dynamic football matches or fast-paced action games, you might feel somewhat dissatisfied. With such a low native refresh rate, fast objects on the screen will always be a bit blurry.

TCL C7K is a TV that on paper looks like the dream gear for a gamer – and most importantly, it also holds up in practice. First, the good news: we have two HDMI 2.1 ports with full bandwidth, so we can easily connect both a console and a computer, making use of all their capabilities. The panel itself supports a refresh rate of 144 Hz, which gives a considerable advantage in fast-paced games. On top of that, it comes with a full suite of gaming features: VRR (variable refresh rate), ALLM (automatic low latency mode), and Dolby Vision support in games. There’s also an HGiG mode that provides an HDR effect aligned with the creators' intentions. GameBar, which is an information bar for gamers. It operates quickly, looks clear (like a Nintendo console👌), and displays what matters most: the current frame rate, VRR status, and even HDR parameters.

NANO81A is unfortunately not a device designed with esports in mind. The lack of 120 Hz signal support is a fact that users planning to purchase this model simply have to accept. Nevertheless, LG’s engineers have worked hard to squeeze the maximum potential from this 60 Hz panel, offering a set of features that genuinely improve gaming comfort. First and foremost, the television supports VRR technology (in the range of 48–60 Hz) and ALLM. This ensures that the image remains stable and does not "tear," and the device automatically switches to low latency mode as soon as it detects a signal from a console. Managing these settings is extremely simple thanks to a dedicated system overlay that allows for a quick preview of parameters without leaving the game. A very significant advantage is support for the HGiG format. This solution is crucial for owners of modern consoles, as it allows the television to correctly "understand" the intentions of game developers regarding HDR tone mapping. In practice, this helps avoid the effect of "blown-out" bright spots, such as clouds or light sources, which is unfortunately a common issue in budget LCD televisions.