TCL C8K vs Sony Bravia 8 MK2

TCL C8K is a really bright television. In synthetic conditions – that is, during tests with brightness charts – it was able to achieve even 3500 nits peak brightness in movie mode. That's an impressive result and brings the C8K close to the market leaders, at least when it comes to panel brightness. More importantly – these aren't just numbers on paper. In films with a lot of bright scenes, such as Life of Pi or The Meg, the brightness clearly exceeds 1000 nits, providing a true sense of HDR effect. The picture in those moments looks very dynamic, colors are saturated thanks to excellent coverage of the color palette, and the lights are – spot on and intense. Exactly how it should be.

However, this doesn’t mean that everything is perfect. Just like in contrast tests, here too, in more demanding scenes, compromises appear. In sequences with very fine light elements – such as stars in the night sky or reflections in dark rooms – the local dimming algorithm can… get confused. Instead of bringing those details up, the television sometimes decides to dim them significantly – down to around 300 nits – to maintain deep blacks. On one hand, this is quite a sensible approach (better deep black than a grey/navy blue screen), but on the other – there may be moments when certain elements of the picture become difficult to see or even disappear into darkness.

TEST UPDATE (20/08/2025): The brightness control algorithm in this model is quite problematic – attempting to calibrate the picture so that it doesn’t drastically overexpose the brightest scenes results in unnatural shifts: improvement in one part of the image results in deterioration in another. The television may achieve slightly higher readings in brightness measurements, but in practice, this comes with a heavily overexposed image that looks very unnatural!

For the record, we provide brightness values without this adjustment:

1. 1463 nits

2. 640 nits

3. 1368 nits

4. 468 nits

5. 1025 nits

Thanks to the new QD-OLED panel, the Sony Bravia 8 II can achieve astronomically high brightness levels of around 2000 nits, translating to near-reference quality in films and series recorded in HDR format. In test materials such as Life of Pi and Sicario 2, the effect is absolutely stunning – details in bright parts of the image remain perfectly visible, and night scenes captivate with depth and contrast. However, it’s not perfect. Compared to its most formidable competitors, the Bravia 8 II shows a noticeable drop in brightness during full-screen, very bright scenes. When comparing peak luminance with 100% white brightness in HDR mode, the Bravia 8 II can appear two or three times dimmer than LG G5 or Samsung S95F models. This was particularly evident in a scene from the film The Meg – the screen became noticeably darker than in competitors' televisions. Despite this flaw, the Bravia 8 II's results still place it at the forefront of the market. It deserves praise for its absolutely top-notch colour gamut coverage – nearly 100% DCI-P3 and close to 90% BT.2020. These parameters allow full potential extraction from HDR content and provide a cinematic experience in the comfort of your home.

In the C8K, a new picture mode has appeared: Filmmaker Mode. This is something we've known for years from televisions of other brands – a mode designed to deliver the director's vision as faithfully as possible, without unnecessary image enhancements. Unfortunately, at TCL, it seems to still be in the "to be refined" stage. Right from the first glance, the screen appears too warm – the image veers into reds, which may not appeal to everyone. The white balance was markedly skewed – the screen looked distinctly warm, and the red colour dominated almost every scene. There was a lack of blue, which led to an unpleasant yellowing and distortion of the image. But that’s not all. Regardless of whether we were watching regular TV, YouTube, or HDR films – the television had a clear tendency to excessively brighten the image. In tests of gamma curves and EOTF, the lines strayed instead of adhering to the standard, resulting in an overly bright and less contrasting image. Additionally, in colour reproduction tests, significant deviations were noticeable – on the colour wheel, some points were actually "drifting away." It must be said plainly: Filmmaker Mode in the C8K, in its current form, is not very cinematic.

Right out of the box, the Bravia 8 II performs really well. In the best IMAX® Enhanced mode, the TV manages to render colours in a pleasant and natural way, although "well" doesn’t mean "best in class" here. The white balance definitely requires adjustment – skin tones tend to lean towards slightly pink/cool tones, both in SDR and HDR content. We also noticed that the EOTF curve characteristics show a tendency to brighten the darkest parts of the image. This is likely due to the manufacturer's desire to highlight as many details as possible, even in deep shadows. Is this a good approach? It's hard to say definitively, but we know one thing – it's not an ideal solution.

After professional calibration, the TCL C8K has made a huge leap forward. In SDR content, the white balance has been almost perfectly set – the screen has finally stopped being too warm and has taken on a neutral character. The gamma curve, which is responsible for how brightness is represented, now looks very good – the image is more coherent and realistic. In HDR content, we also improved the white balance – within the limits of what the television itself allows. Unfortunately, the C8K still interprets brightness management a bit "in its own way." When we look at the EOTF chart in films, it’s clear that the television brightens entire scenes more than it should. Before calibration, this effect was quite bothersome – now the situation is much better, although it still falls a bit short of perfection. This, however, is a limitation of the device itself, which – despite our efforts – does not allow us to fully tame its nature.

After calibration, the excessive cooling of the image caused by an overly strong boost in blue colour was primarily eliminated. The reds became deeper, and the skin tones took on a natural, healthy appearance. The actors, who previously seemed "cold," now look much livelier and more convincing on screen. However, one thing hasn't changed – the analysis of the EOTF curve still shows that the Bravia 8 II has a tendency to brighten the darkest parts of the image. It's hard to say whether this is a deliberate effect by the manufacturer or a consequence of the panel's design and software. In practice, this means that scenes that the creators wanted to leave in deep darkness can reveal more details than intended. Despite this, the reception of the image after calibration is clearly better – the warm, natural tones and realistic skin shades make viewing on the Bravia 8 II simply more pleasant to the eye.

How does the TCL C8K handle lower quality materials? One could say: fairly well, though without much enthusiasm. The television offers a tonal transition enhancement feature designed to smooth out unwanted gradients. In practice, there's a slight improvement visible, but it's not at a level that eliminates all imperfections. The feature subtly softens harsh transitions, but it doesn't work miracles. Film grain isn't completely suppressed, and subtle banding on grey backgrounds can still be noticeable. But maybe that's for the best? – at least the image doesn't lose its texture or depth, as is often the case with televisions that overdo digital processing. When it comes to upscaling, which is enhancing picture quality from lower resolutions, the C8K performs quite well. The image is sharp, and details – though sometimes a bit softened – remain discernible. However, it's not on par with the best picture processors from the competition. On the plus side, there's no issues with overscan, which is the artificial cropping of the image that can still surprise in some models from other brands.

Upscaling and digital image processing are a true showcase of the capabilities of the Bravia 8 II. Sony has long been regarded as a master in this field, and here it only confirms its reputation. The proprietary XR processor can extract nearly the maximum from lower resolution materials – whether it's TV or an old movie from a DVD, the image appears clearer, with more detail and better depth. Sure, if we feed it exceptionally poor-quality material (like our archival photo with the Model), it won't work miracles, but in everyday viewing, it’s hard to find fault.

The gentle gradation feature also performs excellently. In the “Medium” setting, it effectively smooths tonal transitions, eliminating stripes on colourful and grey gradients, while not destroying film grain or fine image details. It’s this balance between delicacy and effectiveness that keeps Sony TVs among the best on the market in this category.

If you're planning a weekend with the Champions League or a marathon of F1 racing – the TCL C8K won't let you down. The television is equipped with a 144 Hz panel, so it should inherently handle fast motion well. And indeed – it performs very well. The fluidity of motion is at a very good level here, and the "Motion Clarity" feature with two sliders (blur reduction and flicker reduction) allows you to easily adjust the effect to your own preferences. Want to slightly smooth things out – no worries. Prefer a cinematic look – no problem.

Motion fluidity is practically a closed topic in the case of the Bravia 8 II. The OLED with 120 Hz refresh rate naturally provides a very clean, clear image in dynamic scenes, so it's hard to complain about anything here. However, one of the best smoothing systems on the market deserves particular praise. They allow for precise adjustment of movie fluidity to personal preferences – from gentle smoothing to an almost "theatrical" effect – without the risk of artificial jumps, image tearing, or annoying artifacts. It's one of those features that will be appreciated both during movie screenings and while watching sports.

TCL C8K offers practically everything we could expect from a screen for gamers. It has variable refresh rate (VRR), automatic game mode (ALLM), Dolby Vision in games, and a well-functioning implementation of HGiG, which helps preserve the creators' intent in HDR titles. The TV also supports 120 Hz in lower resolutions without any problems, and it can even display a staggering 288 Hz in Full HD – a figure that will surely appeal to fans of dynamic shooters and sports games on PC.

On board, we also find the GameBar – a graphical interface that somewhat resembles an elongated Nintendo Switch console. Thanks to this, we gain quick access to information about the current game mode, frame count, HDR format, and other little details that really make life easier for the gamer. We obviously couldn’t resist and ran a couple of races in Forza Horizon on the C8K – and we must admit, it looked and worked really well.

However, there is a slight drawback – in such a fast and clearly gaming-oriented device, it's a bit unfortunate that the manufacturer opted for the implementation of only two HDMI 2.1 ports. For some users, who use several next-gen consoles and, for example, a soundbar with eARC, this could be a limitation that’s hard to overcome.

Sony has really done its homework from previous years and in the Bravia 8 II, it has prepared a package of features for gamers that is hard to describe as anything other than "almost perfect". We have everything you’d expect from equipment of this class – VRR, ALLM, Dolby Vision Gaming mode, HGiG, and even a handy Game Bar that allows you to quickly check parameters and change settings without leaving the game. It's also worth noting how smoothly and seamlessly these features work – no delays, no strange stutter. You simply turn on the game and everything looks as it should. Unfortunately, there are a few "buts". The manufacturer still provides us with only two full bandwidth HDMI ports, so if someone has a console, a PC, and another device like a Soundbar connected via eARC, the fun begins with plugging and unplugging cables. It's also surprising that there's no support for 1440p at 120 Hz – particularly important for Xbox gamers. Overall though – this is one of those TVs that can comfortably be placed in the centre of a gaming lounge and enjoyed without major compromises.