TCL C75B vs LG NANO81A / NANO80A

During our brightness test, the TCL C75B "spat out" around 380 nits of brightness. We recorded similar results while watching most of the films we tested. These can be considered average – the TV performs decently in this segment, but around 400 nits is definitely too low to fully experience the magic of HDR effects. Of course, such results are better than those of budget models, which can achieve nearly half the brightness values. However, for HDR enthusiasts seeking stronger lighting effects and greater realism, the C75B may prove insufficient. On the plus side, it's worth mentioning the coverage of the DCI-P3 colour gamut at 95%. This is a very good result that easily suffices to enjoy a wide range of colours in content available on popular streaming platforms. Vivid and rich colours are definitely a strong point of this model.

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.

TCL C75B offers various picture modes, but in our opinion, the best choice is the “Film” mode. Although its settings are quite decent, the TV struggles with certain colour reproduction issues. In tests, we noticed that the image had a noticeably pinkish hue compared to what could be considered correct. This effect was particularly evident in skin tones, which appeared unnaturally flushed. The main culprit of this phenomenon turned out to be the white balance, characterised by an excess of blue and red in both HD and 4K HDR materials.

An additional problem was the way brightness was reproduced. The gamma, which is responsible for the visibility of details in darker materials, was definitely boosted, causing details in the darkest parts of the screen to be invisible, disappearing into complete black (e.g., the bottom part of the screen in the comparison image - the area around the actress's ear). The situation was similar on the EOTF curve, which was below the correct value, suggesting that a similar issue may be encountered in 4K HDR content.

Thanks to our experience and the appropriate tools, we decided to take matters into our own hands and check how much could be extracted from this model after professional calibration. The details are described in the next section.

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, TCL C75B has clearly improved when it comes to colour reproduction. Although the TV doesn't offer too many options for adjusting the white balance, we managed to improve its settings quite a bit. As a result, the image is no longer overly pink, and the colours now look much more natural and harmonious.

The gamma jump that was previously an issue hasn't completely disappeared, but we were able to significantly reduce it. This has made details in dark scenes more visible – both in HD and 4K HDR content.

Unfortunately, the lack of local dimming is still noticeable. The 'blooming black' effect remains, but that's a limitation of the display itself. Still, the colours post-calibration look significantly better, and the image is much more pleasant to watch.

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 C75B has a feature for smoothing tonal transitions, but unfortunately, we cannot praise it. Regardless of the selected level – low or high – tonal transitions in older materials remained visible, as if the feature wasn’t working at all. It’s hard to say anything positive about it, as in practice it seems completely useless.

Image scaling is better. The TV handles it quite decently, although on thinner elements, like branches in the background, you can see slight jaggedness. However, this is not something that significantly hinders everyday viewing.

Unfortunately, a bigger problem turned out to be overscan, or cropping of the image edges. In our tests, it happened that news ticker or other elements close to the edge of the screen were cut off. This is definitely something to pay attention to, especially if we use the TV for watching news programs or content with text on the screen.

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 C75B definitely has something to offer gamers. The television is equipped with a panel that can display images with a refresh rate of 144 Hz in 4K, and even 240 Hz in Full HD. These are really impressive results, especially for a model from the budget range.

On top of that, there are features for improving smoothness and reducing motion blur in films. The "Motion" option allows for precise adjustment of the effect on a 10-point scale, providing significant personalisation possibilities – everyone can set the smoothness 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 C75B is undoubtedly a television designed with gamers in mind. It has almost everything needed for even the most demanding console users. With the implementation of full bandwidth HDMI 2.1, the TV supports features like ALLM (automatic low latency mode) and VRR (variable refresh rate) – operating within the full capabilities of the TV, up to 240 Hz in Full HD resolution.

Additionally, the television supports advanced HDR technologies, including Dolby Vision and HGiG, which allows for even better detailing in HDR-optimised games. C75B is also equipped with a very convenient interface for gamers in the form of Game Bar, where you can check all key parameters such as refresh rate, input lag, or picture settings – all just a click away.

In one sentence: C75B is a great choice for gamers, offering a wide range of features that fully enable enjoyment of the capabilities of modern consoles and games.

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.