Samsung QN85F vs TCL C8L / QM8L

Although more than twice the number of dimming zones compared to its predecessor did not translate into a spectacular jump in black levels and contrast, we definitely felt it in the HDR effect itself. The QN85F is up to 50% brighter than last year's model, making a huge impression in dynamic scenes. The peak brightness can reach almost 1700–1800 nits, which is truly impressive for Mini-LED in this class. The best part is that almost regardless of the scene being watched, the HDR effect remains strong and vibrant. In four out of five test scenes, brightness was maintained around 1000 nits, a level that in most cases allows the viewer to experience the true magic of this format. Of course, in scene number 4 from the film Sicario 2, the limitations of Mini-LED technology become apparent – the brightness of the helicopter’s small light drops to around 500 nits. This result is not stellar, but it is still much more acceptable than last year's model. Samsung therefore deserves applause, as the improvement in brightness in the QN85F is drastic compared to its predecessor. However, it is a shame about a certain trend visible in this year's televisions – the manufacturer has worsened the colour gamut coverage. Although the QN85F has a QLED panel, its score of around 90% DCI-P3 is average, and in the most demanding films, it can lead to less vibrant colours than its predecessor. Despite this shortcoming, the overall HDR effect stands at an excellent level and truly makes a big impression in this class of devices.

In terms of HDR, the TCL C8L turns out to be a hellishly bright television – quite literally. On a synthetic test pattern sized at 5%, our measurement equipment indicated a result exceeding 4500 nits. This is a truly astronomical result, considering that reference monitors used by directors, which we often refer to in our materials, typically operate around 4000 nits. Does this mean that the C8L breaks barriers and climbs to the technological peak of Mini-LED? Not quite. Dry synthetic tests are one thing, while real cinematic images are another. In real, varied scenes, the C8L peaks at around 1600 nits. This is still a very good result, ensuring a very high level of HDR dynamics, but it is also clearly lower than what the manufacturer boasts in the specifications. The problems begin with very small bursts of light – at that point, brightness can drastically drop to around 600 nits. The algorithm tries at all costs to maintain deep blacks and minimise the halo effect, but this comes at the expense of HDR impact. This is perfect evidence that laboratory test patterns rarely align with what we ultimately see on the screen.

However, huge praise is due for colour reproduction, thanks to the new generation of SQD (Super Quantum Dot) quantum dots. The DCI-P3 colour gamut coverage reaches 97%, but the truly jaw-dropping measurements come from the extremely demanding BT.2020 space. The C8L achieves an impressive 90% in this space, placing it alongside today's top screens equipped with RGB backlighting. Importantly, unlike some screens with Micro/Mini RGB backlighting, this effect is stable regardless of the scene displayed. Of course, it’s worth remembering that content mastered for such a wide gamut in films or series is still rare. However, the very fact that the panel has such a "colour reserve" deserves tremendous admiration.

Samsung QN85F offers several preset picture modes, but by default, when the television is turned on, it starts in "Eco" mode. And we could actually end the discussion here, because for such a model, using this setting makes no sense – the picture is washed out, unpleasant, and far from what we expect from a television of this class. We therefore carried out our tests in the best of the available modes, which is the Filmmaker mode. Its purpose is to faithfully reproduce what the directors saw during the filming of the movies, and indeed this is the setting that performs best among all factory options. However, this does not mean that it is without flaws.

Both in SDR and HDR, the QN85F quite strongly emphasised warm colours. This resulted from deficiencies in white balance, where there was a distinct lack of blue. Additionally, the picture was sometimes overexposed – as indicated by both the gamma brightness characteristic and the EOTF curve, which showed that the television tends to blow out scenes. In SDR, the colour reproduction errors (Delta E levels of 4-5) were still acceptable, but in HDR the discrepancies became quite large and clearly deviated from what the creators intended to show us. Fortunately, Samsung provides a wide range of calibration tools in its televisions, so – as always – we proceeded with professional calibration to see how much could be improved.

We tested the TCL C8L in the best factory mode available in the TV’s menu for image fidelity. That’s of course Filmmaker Mode, which only arrived in this brand’s software relatively recently (a year ago in the "K" series). It allows the average user to achieve quite decent colour reproduction straight out of the box, though it is certainly not perfectly tuned. Looking at the unit’s out-of-the-box white balance — in both SDR and HDR material — the red component was clearly lacking, which made the image noticeably cooler and slightly shift towards blue‑green tints. The issue of brightness management also looks ambiguous, as we mentioned earlier. While the gamma linearity in SDR content is really good and stays steadily at the reference value of 2.4, the situation in HDR is much worse. Tracking the EOTF curve clearly shows the TV has a noticeably boosted brightness across the entire range, so the final image can be excessively bright and inconsistent with the creators’ intent, and this is in a mode that by definition should avoid that. Of course, as with every sample in our lab, we subjected this one to professional calibration, and you can find the results below.

After calibrating the film mode, we managed to tame the colours in both modes to near perfection – most of them did not exceed an error value of 3, which is the threshold of perception by the human eye. The image became more natural, fuller, and at the same time free from bloom, which was noticeable right after taking the television out of the box. This shows the great potential of the QN85F and how well it responds to precise settings. However, this does not change the fact that certain technological barriers cannot be overcome. Despite the enormous benefits of calibration, there are still limitations of the panel itself. Although the number of dimming zones has doubled compared to its predecessor, the algorithms controlling the backlighting can manipulate brightness in their own way. Sometimes this leads to slight colour inaccuracies or gently visible halo effects around bright objects. Nevertheless, the experience after calibration is truly pleasant and demonstrates how good a screen the QN85F can be if we just take a moment for proper settings.

As you can see, the results of a professional calibration of the TCL C8L are truly promising, thanks to the comprehensive calibration controls the manufacturer has provided in the menu. Above all, we managed to fully correct the white balance, eliminating the red deficiency, so the image finally stopped drifting into unwanted cool tones. After that adjustment, the errors in the ColorChecker test fell to near-reference values, consistently sitting below a Delta E threshold of 2, i.e. below the visibility threshold for the human eye.

If test patterns look so perfect, you may ask us why the final score in this category is lower. The answer lies in the brightness management described earlier. Although the menu includes sliders that let you precisely straighten the EOTF curve on synthetic signals, when faced with real film material (I recommend enabling the EOTF filter when watching films), it becomes clear that the TV, in most scenarios, still responds to HDR metadata in its own way. As a result, the picture can be slightly over-bright and not faithful to the filmmakers' intent, and it is precisely for this lack of consistency with real films that we had to take a few points off the C8L's score.

Although the native tonal transitions on the QN85F with 4K material perform excellently, we do not always deal with content in the highest resolution. At that point, it becomes crucial how the television handles upscaling and digital image processing. This process is managed by Samsung's proprietary processor – AI NQ4 Gen2. In practice, it operates very efficiently. If visible colour banding or other undesirable phenomena occur on the screen, for instance, in materials from YouTube, they can easily be smoothed out using the "noise reduction" feature. Set to a medium level, it improves tonal transitions without excessively blurring desired details. However, it is important to remember that – as with most Samsung televisions – this function heavily interferes with the film grain. Therefore, during cinematic screenings, it is wise to use it cautiously to avoid losing the natural character of the image.

The upscaling itself looks very good. Test materials in lower resolutions were displayed sharply and clearly, with a great deal of detail. The only downside remains the issue of overscan, which is the trimming of the edges of the screen. In most situations, this is not noticeable, but with very old materials below HD quality, there may be cases where a fragment of the image from the left side gets slightly cut off.

This year the C8 series and the higher-end models have probably received the biggest and most eagerly awaited upgrade in TCL’s history, and it concerns digital picture processing. The C8L is the entry-level model in the manufacturer's line-up that has been equipped with the latest flagship chip MediaTek Pentonic 800 (listed in the menu as MT9655). It is thanks to its computing power that the feature called "Gradual Smoothing" finally works as it should. The algorithm effectively removes unwanted posterization (ugly tonal transitions / colour banding) from the image, doing so intelligently enough that it does not degrade the sharpness of other details.

The processor also handles upscaling lower-resolution content to 4K very well. Although assessing this element can be largely academic, because the differences between today’s TVs in this class are very subtle. The most important takeaway is that TCL finally has nothing to be ashamed of compared with the competition.

Motion smoothing and fluidity in the QN85F is a topic worth discussing in more detail, as the television is equipped not with a standard 120 Hz panel, but with a 144 Hz one. The extra hertz will mainly be appreciated by PC gamers, but the mere presence of such an option can be seen as a nice addition and a sign of the times – it’s hard to complain about the trend towards faster panels, as in practice, each of us would prefer the image to be as smooth as possible. However, the most important thing is how the television handles typical 120 Hz refresh rates – in the case of consoles, sports, or films recorded at 24 or 30 frames per second. Here, the QN85F performs really well. In films, one can easily adjust the character of the image thanks to the "image clarity" function, where we find two adjustable sliders. Key for screenings is the one responsible for reducing judder. Lower values give the image a more cinematic character with preserved "frame rate," while higher values lead to strong smoothing reminiscent of television theatre.

The TCL C8L is equipped with a fast panel with a native refresh rate of 144 Hz. This specification will be most appreciated by demanding PC gamers, while most users, who rely on consoles or TV broadcasts, will make use of a stable 120 Hz. It is at 120 Hz that the motion-processing algorithms take care of image processing (in films, series and sports). In the TV menu you'll find a "Motion Clarity" tab that allows you to tailor the motion smoothing to your own preferences. The algorithms cope well with both cinematic productions at 24 or 30 frames per second and with fast-paced sports broadcasts at 50 or 60 frames per second, ensuring appropriate smoothness.

The Samsung QN85F makes a really great impression in terms of gaming features. It has four HDMI 2.1 ports, so we can easily connect multiple devices simultaneously. There is also variable refresh rate (VRR) which prevents screen tearing, as well as an automatic game mode (ALLM) that allows the television to switch to the appropriate settings when we start the console. Additionally, it supports refresh rates of up to 144 Hz – something that PC gamers will particularly appreciate, but the mere fact that such an option is available shows that Samsung is fully committed to supporting gamers. The Game Bar panel also deserves praise. It provides a quick overview of the most important parameters – from frame rate to refresh mode, even including shortcuts to picture settings. Instead of navigating through the entire menu, everything is at hand, which proves to be very convenient in practice. However, the most interesting addition is the Motion Plus gaming feature. It's effectively a motion smoother adapted for the gaming world. When enabled, the image becomes smoother, sometimes looking as if we've gained several extra frames, and importantly – the response time doesn’t increase enough to hinder gameplay. This solution truly sets Samsung's 120Hz televisions apart from competitors.

[UPDATE] We have updated our tests of Samsung televisions from the 2025 model year due to the release of software version 1131, which restored the crucial gaming feature HGiG.

The only major downside remains the lack of proper HGiG support. This is a standard responsible for correct tone mapping in HDR games, meaning that brightness and contrast are displayed as intended by the creators. Without HGiG, we have to adjust brightness manually, which doesn’t always yield perfect results. The feature was available in previous models, but it vanished from the QN85F after one of the updates. We hope that Samsung will quickly resolve this issue, and we will keep checking to see if it has been fixed.

For gamers – and especially for owners of powerful PCs and several consoles simultaneously – the TCL C8L is a true monster. It is the first model in this manufacturer's lineup to feature as many as four full HDMI 2.1 ports with a maximum bandwidth of 48 Gbps. This is directly attributable to the use of the new Pentonic 800 processor, which we discussed earlier. Additionally, the television seamlessly supports practically every gaming feature. We have an automatic game mode (ALLM) that reduces latency to minimal levels, and full frame synchronization (VRR) operating in an impressive range of up to 288 Hz. There's also talk of standards such as G-Sync or FreeSync from Nvidia and AMD. When it comes to display standards, there are no compromises either: the C8L offers complete support for HDR formats in games, including gaming Dolby Vision and the HGiG profile. We can conveniently manage all of these features from a very readable player bar (Game Bar), which we can personalise to our own preferences. From a purely gaming perspective, there's really nothing to fault the C8L on – well, maybe aside from the previously mentioned slight blurring. But other than that? It's a no-nonsense machine for gamers.