Sony X85L vs TCL C7K / QM7K

The Sony X85L TV offers solid HDR performance with a brightness level of 750 nits, which is sufficient to enjoy vivid effects. In scenes of moderate difficulty, such as the first, third, or fifth test scenes, a brightness of around 600 nits allows one to fully experience the HDR effect. Unfortunately, in more demanding segments, such as the scene from the movie Sicario 2, the TV shows its limitations. Drops in brightness to 250 nits make the HDR effect lose its impressive quality and resemble regular SDR instead. Nevertheless, it is worth highlighting the very good coverage of the DCI-P3 color palette at 95%, which definitely deserves praise and positively affects the overall image quality.

TCL C7K is one of the brightest MiniLED televisions in its price range. Under the best test conditions, the screen was able to achieve over 1200 nits, resulting in impressive, and at times blindingly bright scenes. And most importantly – this is not just a theoretical measurement. In practice, the brightest parts of movies can shine with true cinematic grandeur. Home HDR cinema fans should be truly pleased.

The impression is especially great in scenes with large areas of brightness – white skies, explosions, sun reflections, or magical sunsets can surprise with the intensity of light that rarely appears in this price range.

However, things get a bit worse when more challenging scenarios appear on the screen, which have been described in terms of contrast – meaning images full of details, with small bright elements against a dark background. In such cases, the C7K often chooses to retain black at the expense of brightness. An example? Scenes from the movies Sicario 2 or Life of Pi, where small light sources (like a distant lantern) can be less visible, and details in the lights are simply dimmed or blend into the background.

For many viewers, this may be an acceptable compromise – as we achieve deep blacks and pleasant image texture. Nevertheless, it is worth being aware that the visibility of small details in bright areas is not the strongest suit of this model. It is simply a technological limitation that still exists – even with over 300 zones.

The Sony X85L television was tested in IMAX Enhanced mode, which, although associated with world-class cinema, does not guarantee an image that aligns with the director's vision. The main issue is the white balance – there is a noticeable strong dominance of blue color and significant lack of red. As a result, the image becomes unnaturally cool and appears artificial. The color reproduction errors were confirmed by the Colour Checker test, which showed significant discrepancies – colors were "scattered" like shots from a rifle, and only a few samples hit the target values. This clearly shows that the precision of color reproduction leaves much to be desired.

The brightness of the image is one of the positive features of the TV. The gamma for HD content is at an acceptable level, although there are minor errors, but generally, it is quite good. However, the brightness characteristics for 4K materials remain an issue, controlled by the EOTF curve. It is evident that very small, bright elements of the image are too dim, which is a result of the limited number of dimming zones due to the design of the television.

A new feature 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 truest to the original vision of the creators and is often recommended by enthusiasts of good image quality. Unfortunately – as is often the case – the mere presence of this feature does not guarantee perfection. The Filmmaker mode in the TCL C7K is not free of flaws. One could point out the incorrect white balance, particularly the slight dominance of blue, which caused cool, somewhat grayish skin tones. But that was not the biggest problem. The main complaint was excessive brightness exposure, which is clearly visible on the gamma and EOTF graphs. The image was simply too bright, at times even blown out, which affected not only the plasticity of the scenes but also the overall viewing experience. Some details simply got lost, and the whole image looked as if someone had overdone it with the brightness slider. As always – we decided to see what could be squeezed out of it after calibration. And this is where things got really interesting...

Thanks to the use of calibration tools offered by Sony X85L, the image quality has been significantly improved. After calibration, the white balance for HD content is much more stable, making colors look more natural and the image gains authenticity. Although it is not perfect, these changes allow viewers to enjoy a more realistic representation of colors, eliminating the earlier cool tone. The gamma, which already performed decently, has been adjusted to an even better version. As a result, tonal transitions and brightness are more consistent, positively affecting the depth and detail of the image.

As for 4K content, despite efforts, the white balance still struggles with a deficiency of red, which can result in overly warm colors in some scenes. Synthetic tests showed that the EOTF curve in HDR is quite stable, with a slight boost in mid-bright scenes. However, in real film materials, the TV can still be too bright with fine, light details, which is a result of the limitations of large local dimming technology.

Nonetheless, calibration has brought significant benefits, particularly in color accuracy, improving overall image quality and providing a more natural and cohesive directorial vision.

After calibration, the TCL C7K showed itself in a really good light, especially when it comes to SDR content. We managed to fine-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 an almost perfect result, meaning that the image is very close to what the creators intended. Unfortunately, it was less impressive with 4K HDR content. Although we managed to slightly calm the white balance and correct its earlier errors, it is still evident that the TV has certain "MiniLED traits," especially in managing brightness. When we checked how the C7K performed with the EOTF curve on real 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 – the black loses 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 color tuning, natural skin tones, and pleasant brightness make movie sessions and everyday content viewing more than satisfactory.

In terms of smoothing tonal transitions, the Sony X85L television does not offer any dedicated enhancement options, which is a downside. On the other hand, image scaling performs quite well – the television adds a bit of artificial sharpness, which can make details such as tree branches more pronounced, although sometimes with noticeable jaggedness. This type of effect may appeal to some viewers who prefer a more detailed image.

The 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 shifts. 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. What's worse – the function can remove 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.

As for scaling lower-resolution content, it's already better. SD and HD materials look quite decent, though sometimes we had the impression that the image loses sharpness and becomes too soft – as if something took away its clarity. Fortunately, at 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.

The Sony X85L, equipped with a 120 Hz panel, will meet the expectations of a wide range of users – from sports and gaming fans to movie buffs. Movie enthusiasts will surely appreciate the presence of one of the best motion smoothing systems, Motionflow. This system offers adjustment via smoothness and clarity sliders – smoothness is responsible for motion fluidity, eliminating stutter, while clarity enhances the sharpness of fast scenes, reducing blur.

TCL C7K handles motion smoothness really very well. The matrix used in it offers a refresh rate of 144 Hz, which already 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 will write more about this in the paragraph about gamers and PC cooperation. Returning to everyday use – both sports and movies look very good here. Thanks to the fast panel and well-functioning motion smoother, the C7K is perfect for watching matches, but also for movie screenings. In the menu, we will find two sliders – blur reduction and flicker reduction – which allow us to adjust the motion smoothness effect to our own preferences. At lower settings, we get a more cinematic effect, with slight frame motion. At higher settings – the image becomes more theatrical, smooth to the point of exaggeration. Everyone can set it to their liking.

Sony X85L offers quite a solid set of features for gamers, making it an attractive choice for gaming enthusiasts. First and foremost, the TV has a 120 Hz panel, translating to smooth and dynamic image display, ideal for both fast-paced action games and more demanding sports titles. It is equipped with two HDMI 2.1 ports with full bandwidth of 48 Gb/s, allowing for the full utilization of next-gen console capabilities. Additionally, the Sony X85L supports VRR (Variable Refresh Rate) technology, which helps reduce stuttering and artifacts during gameplay, providing a fluid experience. The TV also supports G-Sync, which is particularly beneficial for gamers using NVIDIA graphics cards, allowing for screen refresh rate synchronization with GPU performance, eliminating the tearing effect. It is worth mentioning the Game Bar feature, which facilitates quick access to essential gaming-related settings such as VRR, brightness levels, and display modes, making it convenient and useful during gameplay.

However, there are certain limitations. The TV does not support HGiG, which may be a downside for some gamers, as HGiG optimizes HDR effect rendering in games, providing a more authentic visual experience. Additionally, while Dolby Vision mode is available, it is not practical for gaming due to very high input lag.

TCL C7K is a TV that looks like the dream equipment for gamers on paper – and most importantly, it also performs well 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, taking full advantage of their capabilities. The panel itself supports 144 Hz refresh rate, which provides a significant advantage in dynamic games. Additionally, it comes with a full package of gaming features: VRR (Variable Refresh Rate), ALLM (Auto Low Latency Mode), and Dolby Vision support in games. There is also an HGiG mode, which allows for HDR effects that align with the creators' intentions. GameBar, which is an information bar for gamers. It operates quickly, looks clear (like a Nintendo console👌), and shows what’s most important: the current frame count, VRR status, and even HDR parameters.