Panasonic W85 vs TCL C8L / QM8L

Unfortunately, we do not have good news here. The Panasonic W85B is rather dim – its peak brightness does not exceed 300 nits, so it’s hard to talk about any true HDR effect. In practice, this means that scenes which can “shine” and make an impression on other screens simply look like ordinary SDR with a slight boost in colours here. Our measurements and film tests confirmed this – regardless of the content, the W85B will not extract anything more from HDR. Therefore, if someone is looking for a television specifically for HDR, it is better to look towards other models. As consolation, the fact remains that in terms of colours, the W85B performs quite well. It is a QLED television, so its colour gamut coverage is wide, and most films and series look natural, without a distinct “washed-out” effect. The colours are saturated, so in everyday viewing, there is no sense that something is strongly amiss.

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.

When testing the Panasonic W85B, we obviously started with Filmmaker mode, as this is today’s gold standard when it comes to watching content “as the director intended.” The problem is that this television is quite far from those intentions. The biggest issue turned out to be an excess of red – both in SDR and HDR. The image often appeared too warm because of this, and in some scenes, it was almost “blazing.” Additionally, there is the issue of brightness management. When we looked at the gamma or EOTF charts, it was clear as day that in most scenes, the television brightens the image more than it should. The effect was simply predictable. Details can get lost, there is flattening, and highlights are blown out across the entire screen. We know, of course, how to correct this, but it must be said honestly that it requires a lot of work during calibration. Out of the box, the W85B does not provide a picture close to reference – it is rather a television that will always interpret colours and brightness a little “in its own way” without professional adjustments. Unfortunately, this is to the viewer’s detriment.

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.

Fortunately, calibration made a significant difference for the Panasonic W85B, particularly in SDR content. Here, the improvement was really noticeable – we managed to balance the whites and somewhat tame the tendency of the television to excessively brighten the entire image. The picture became more coherent, and the colours gained a naturalness that was lacking in the factory settings. Admittedly, the results from the Color Checker are not perfect, as the W85B has visible issues with green saturation, but overall, we evaluate the post-calibration effect in SDR very positively. The situation is a bit different with HDR. Here too, we managed to reduce the tendency to warm up the entire scene, so the image performed significantly better than in the factory settings. However, the same issue we mentioned earlier is still evident – the television interprets the image too much "on its own" and brightens the entire screen. The lack of local dimming only exacerbates this effect. In summary, briefly in SDR content, the W85B performs really well after calibration and is more than suitable for daily viewing. However, in HDR, even after adjustments, it remains difficult to unequivocally recommend it for serious viewing sessions.

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.

With native SDR content, the Panasonic W85B performs very well – tonal transitions are smooth and natural, without artificial bands or prominent contours. However, the situation is worse when it comes to lower resolution materials. It is precisely there that the television has the most difficulty with "enhancing" the image. The lack of any option in the menu that would allow for improving gradation means that with older films or materials from YouTube, one can sometimes notice slight issues with colour blending.

Fortunately, upscaling, or raising the quality of lower resolution content, performs much better. This is definitely a strong point of this model – the image is scaled cleanly and in detail, and the television handles this better than one might expect from such an inexpensive piece of equipment. This is thanks to the HCX processor, which Panasonic has been developing for years, and it is noticeable that even in the lower series it can do a good job.

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.

At first glance, everything looks good – the Panasonic W85B has a 120 Hz panel and even a 144 Hz mode, so it seems that it should cope well with smooth motion. The problem arises when we look into the settings. The options for improving fluidity are supposedly present in the menu, but in practice… they don't change anything. No matter what we choose, the image looks the same. On top of that, there is a lack of BFI, or the black frame insertion mode, which on many televisions helps sharpen motion. And suddenly it turns out that despite the strong panel, the W85B offers us no real tools to adjust motion according to our needs. It’s only good when the source itself operates at a higher frequency – for example, games at 120 Hz. But when it comes to films or sports, we simply have to accept what the television shows us, because nothing more can be done about it.

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.

On paper, the Panasonic W85B looks really solid. It has two full HDMI 2.1 ports, support for ALLM, variable refresh rates, Dolby Vision in games, and of course, a high refresh rate of the panel itself. Additionally, it features Panasonic's characteristic game tools bar – a "game bar" that allows you to preview key parameters and quickly change them if needed with a single click. This sounds great, but the problem arises when we turn on HDR. Here, the W85B suffers significantly, as there is practically no HGiG implementation – the television poorly manages brightness, and instead of an accurate picture, we get scenes that are too bright, sometimes even blown out. The solution? The simplest one – turn off HDR in the console settings and leave everything in SDR. And this is where it gets really interesting, as in this scenario, the W85B shows its better side. Low input lag, high fluidity thanks to 120 Hz – all of this makes gaming look phenomenal. Indeed, HDR can be forgone, but if the priority is responsiveness and smooth gameplay, the W85B offers a lot of fun.

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.