TCL C6K vs Sony BRAVIA 5 (XR5)

TCL C6K is a moderately bright TV that can showcase its full potential under the best cinematic conditions – the maximum brightness is around 600 nits. In scenes with large, intense light sources, the HDR effect can be really satisfying, providing a sense of cinematic brilliance. However, it should be noted that when managing the backlighting zones, there are situations where some elements become dimmed and sometimes can even become barely visible. It is clear that there is a lack of proper algorithm optimization here, although looking at the technical parameters in this price range, the design itself performs very well.

Looking at similar results in terms of black levels and contrast, we expected the same stable performance as last year's model when it comes to HDR content. Unfortunately – and this must be said plainly – there has been a regression here that is hard to overlook. The paradox is that the peak brightness of the Bravia 5 can be impressive: in our synthetic tests, the television reached around 1000 nits in HDR. Sounds great, right? The problem is that this power does not always translate effectively to all movie scenes. When small, pinpoint elements appear on the screen, something that was usually refined with surgical precision in the case of Sony clearly falters this time. The algorithms try to maintain deep blacks around small objects, but the side effect is that details can be dimmed to the point of becoming barely visible. A case in point is the movie Sicario 2 – there, in some scenes, small light sources practically vanished as if someone had covered them with dark film.

Of course, not everything looks so dramatic. In simpler, brighter scenes, where the image is filled with a greater amount of light, the Bravia 5 shows that it can shine: literally and figuratively. At that point, the television achieves values in the range of 600–800 nits, which we observed in both synthetic tests and during movie screenings. The impression is truly positive; the brightness adds dynamism, and the colors appear vivid and fresh. However, there remains a certain dissonance. We feel a slight confusion because it is evident that something has gone the wrong way. Technological advancement – more zones, greater backlight power – has not been supported by the refined image management we usually associate with Sony. Fortunately, there are elements that have not been worsened and are instead at a very high level. We are talking about color reproduction. Thanks to the use of the PFS filter, the color gamut coverage is excellent – about 97% of DCI-P3 and 75% of BT.2020. These values allow for a truly wide color reproduction, giving films a natural and cinematic character.

This year's TCL televisions feature a Filmmaker mode, and it must be admitted that it is definitely the best choice straight out of the box. This is the mode we recommend for everyday watching of movies and series. Unfortunately, as is often the case, the best doesn't mean perfect. In the case of SDR content, the image was too warm because the red was strongly emphasized in the white balance. On the other hand, with HDR content, we had the opposite impression – the image became cooler than it should have been due to excess blue. Additionally, the brightness characteristic sometimes led to highlights being blown out. In practice, this resulted in quite noticeable color test inaccuracies that are hard to accept in a mode advertised as "by the creators."

Sony Bravia 5 was of course tested in the best possible mode, which is the Cinema mode. Right out of the box, it offers the most natural colors, definitely better than anything provided by the "eco" or "dynamic" modes, which are more suitable for a store display than a living room. However, the Cinema mode itself does not guarantee that we can always expect cinematic image quality. In SDR content, we had practically no major complaints – the slightly warm white balance made the scenes take on a somewhat golden tone, but it was nothing that was glaringly obvious. However, the problem arose with HDR materials. Here, the color reproduction simply looked poor. The white balance was severely off – with an excess of blue and a noticeable lack of red. At times, it even resembled the store "super vivid image" mode, where everything is overexposed and artificially boosted.

This state of affairs made managing brightness seem too aggressive as well. The EOTF graph clearly showed that the television had issues with overexposing many scenes right out of the box. And while we know what Sony televisions are usually capable of, it was hard to remain indifferent here – which is why we quickly decided to go for calibration.

Thanks to the white balance correction, it was possible to significantly reduce the C6K's tendency to distort colors, which resulted in a very good final outcome. After calibration, we will no longer observe the effect of excessive warming of scenes in SDR or overly cooling the image in HDR. However, it is worth taking a closer look at the brightness characteristics. In SDR content, there are few complaints – the image looks really good, especially in older movies, TV shows, or materials from YouTube. This is much worse for HDR content. Analysis of the EOTF curve suggests that everything is fine, but in practice (EOTF in films), the limitations of the construction become apparent. The TV tends to overly brighten the smallest parts of the frame, and in other situations, it can dim the entire scene too much. The effect of calibration is therefore evident, and in terms of color, the C6K has gained quite a lot, but certain limitations arising from local dimming and, in fact, its management by the C6K simply cannot be overcome.

After calibration, the situation changed drastically. We managed to tune the white balance so that entire scenes began to look more natural, and the image gained coherence and elegance. In HDR, we finally got rid of that unwanted blooming effect that had previously ruined some shots. Suddenly, it turned out that the Bravia 5 can extract much more from films than the first contact "straight out of the box" suggested. Yes, if we take a look at the graphs and compare them with the reference patterns, we can see that the start of the EOTF curve slightly deviates from the reference line. However, this is not so much a calibration error as a natural limitation of Mini-LED technology, which cannot be bypassed. Sony, instead of clinging to perfect black, prefers to prioritize the visibility of details – and in practice, it’s hard to disagree with that. We prefer to see the texture of the material on the screen rather than a pitch-black blob that obliterates all nuances.

The calibration itself made a significant difference. After about an hour spent on adjustments, we felt that the picture resembled that from the best cinema halls – of course on a home scale, but with the same sense of quality and refinement. And in such moments, we remember why we love Sony televisions: because once we fine-tune them, they can reward us with an image that captivates for long hours.

The TCL C6K performs quite well in terms of scaling. Lower quality materials look acceptable, and the lack of overscan issues means that the image is displayed in full, without cropping. However, one cannot expect miracles – content of very low quality will not gain new life here, as the image processor has its limitations. On thin lines or details, the characteristic tearing is visible, which reveals the absence of advanced image enhancement algorithms. It is also a pity that the C6K lacks the feature for smoothing tonal transitions – in older films or video materials, color banding can be noticeable and may be bothersome during long viewing sessions.

Bravia 5 carries within it the genes of Sony, which remain intact – and thank goodness for that, because we are talking about absolutely remarkable digital image processing. There is a reason that for years it has been believed that it is this brand of television that sets the standard for how a screen should handle lower-quality materials. If someone is still watching classic television, old movies, or YouTube in lower resolution, here they get equipment that can turn such content into a surprisingly pleasant experience. On board, we find several tools worth activating. The first of these is "digital noise reduction." Set to a medium level, it works almost flawlessly – smoothing tonal transitions that usually pose the biggest challenge with low-quality materials, while not introducing any artificial artifacts. Importantly, it also does not remove the filmic character, or the natural grain that is an intentional element in many productions. Another advantage of Bravia 5 is the upscaling capabilities of the XR processor. The image presented after scaling is soft yet sharp and clear. The contours of characters are well-defined, and backgrounds retain their structure without excessive artificial sharpening. It’s hard to find a better television for watching lower-quality content – Bravia 5 only confirms why Sony is regarded as the benchmark in this field.

TCL C6K features a 144 Hz panel, which is a significant advantage in this price range. This is an important step forward compared to the previous model C655 PRO, which offered only 60 Hz at 4K. The difference is especially noticeable when watching sports or playing games – the ball, athletes, or fast action in a game are displayed more clearly and without losing details. An interesting fact is also the ability of the panel to operate at 240 Hz, which the manufacturer does not mention in official materials. We will return to this topic when discussing the game mode for PC.

TCL also added a feature for movie watchers: "Motion Clarity," which allows you to adjust the image to your preferences using two simple sliders. You can keep the movie frame visible or opt for a very smooth, almost theatrical effect. This way, everyone can find settings tailored to their taste.

Bravia 5 has a 120 Hz panel, which in itself sounds like an invitation to watch sports, fast matches, or spectacular action movies. However, the real magic begins only when MotionFlow comes into play – Sony's proprietary smoothing technology. Thanks to it, we can adjust the character of the image to our own preferences. The “smoothness” slider allows us to transition from a cinematic vibe with a slight “jitter” of the film frame to an almost theatrical fluidity, where every ball in the game glides across the screen like on a string. The higher the value, the smoother and more fluid it is; the lower – the more cinematic and natural. In the options, we also find an additional setting that Sony has called “clearness.” This is nothing more than the BFI function (which stands for black frame insertion), which aims to improve motion clarity. It sounds great in theory, but in practice, you need to use it with great caution. Why? Because all higher settings cause brightness drops of up to half, and in some cases, there can also be contour doubling. Therefore, if we want to use it, we recommend the lowest possible level – “1” out of the available ten. This way, we gain a little better motion clarity without risking a loss of half the image brightness.

The TCL C6K is a TV that can confidently be called equipment designed for gamers. Here we have 4K at 144 Hz, VRR support, automatic game mode (ALLM), and Dolby Vision Gaming. Additionally, there's a practical Game Bar, a panel with the most important settings readily available – useful when we want to quickly change something during gameplay (e.g., screen aspect ratio: Yes, that’s possible!). The wide VRR range, reaching up to 240 Hz, deserves attention. However, this is mainly an option for PC gamers who drop below the native 4K resolution. Then the TV can spread its wings and show additional smoothness, especially in fast-paced e-sports titles. In the case of consoles, we stick to the classic limit of 120 Hz, but the possibilities are still quite broad. The only drawback is a slight ghosting that can sometimes be seen in dynamic scenes. Other than that, the C6K offers everything gamers expect from a TV.

In the Bravia 5, there is significant progress compared to the X90L model from two years ago. The television offers literally everything that its predecessor had, but this time the issues that could irritate gamers have been fixed. The problems with setting up variable refresh rate (VRR) have disappeared, and there are no longer any issues with configuring HDR content in HGiG mode. In short: we get a device that simply works as it should without any fuss. The Bravia 5 thus has everything one could expect from a modern gaming television – and it could be advertised with the slogan "ready for PS5" without exaggeration. This is a statement we couldn't make about the X90L model. Hats off, Sony!

It's just a shame that in such a relatively high-priced model, a complete set of four HDMI 2.1 ports is missing. In everyday use, this won't be a problem for most people, but if someone has a console, soundbar, and additional equipment connected via HDMI, at some point there will be a need to either choose or juggle cables.