Sharp GR8 vs TCL C7K / QM7K

Sharp GR8 in its promotional materials boasts of "very high brightness" at a level of 500 nits. Unfortunately, our tests showed that the reality is somewhat different – the average luminance value we managed to achieve was around 360 nits. This is rather an average result, especially in the context of the manufacturer's claims. Such brightness does not allow for a full enjoyment of HDR effects. The image is a bit more defined than in standard SDR, but it is difficult to speak of true richness and depth in bright elements here. However, praise is due for the DCI-P3 colour gamut coverage at a level of 95%. This is a result of the application of an additional PFS layer, known from QLED technology. As a result, the colours are vivid and have a pleasant, natural tone, which somewhat compensates for the deficiencies in brightness.

TCL C7K is one of the brightest MiniLED televisions in its price range. Under the best testing conditions, the screen managed to achieve over 1200 nits, resulting in impressive, at times almost blindingly bright scenes. And most importantly – this is not just a theory based on measurements. In practice, the brightest parts of films can shine with true cinematic grandeur. Fans of home HDR cinema should be truly satisfied.

The impression is excellent, especially in scenes with large areas of brightness – a white sky, explosions, sun reflections, or magical sunsets can surprise with an intensity of light that is rarely seen in this price range.

However, it gets a bit worse when more challenging scenarios appear on the screen, as described when discussing contrast – that is, images full of details, with small, bright elements on a dark background. In such cases, the C7K often decides to preserve black levels at the expense of brightness. An example? Scenes from the films Sicario 2 or Life of Pi, where small light sources (like a distant lantern) can become 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 black levels and a pleasing plasticity of the image. Nevertheless, it is worth being aware that the visibility of small details in bright areas is not this model's strongest suit. It is simply a technological limitation that still exists – even with over 300 zones.

At the outset, it is worth noting that colour reproduction tests are always conducted in the best factory picture mode. In the case of Sharp GR8, this is the “Film” mode. As for white balance, which affects how we perceive colours on the screen, in SDR mode, there is an immediate noticeable dominance of blue. This results in an unnatural cooling of the image – blue elements take on a purple hue, and skin tones acquire a pinkish glow, as we can see in the comparative photo from the film STAR WARS. During the Color Checker test, it was clear that the colour samples deviated from the reference values, confirming considerable errors in colour reproduction. The gamma was also not ideal – it caused excessive brightness throughout the entire image, resulting in a lack of depth and appropriate tonal transitions in the scene.

In 4K HDR mode, the situation looks significantly better. The dominance of blue is much less noticeable, although there are minor issues with the combination of red and blue. This causes some shades to appear somewhat unnatural. The EOTF curve, responsible for the brightness of the image in 4K HDR content, revealed another problem – the television tends to excessively dim the image across the entire surface of the screen.

In summary, the “Film” mode in Sharp GR8 would require a few adjustments to fully utilise the potential of this television. Fortunately, we took care of that and proceeded with calibration.

A new feature in TCL televisions for 2025 is the long-awaited Filmmaker mode, which until now has been found in most competing brands. This is great news, as this mode is considered to be the truest to the original vision of the creators and is often recommended by enthusiasts of good picture quality. Unfortunately, as is often the case, the mere presence of this mode does not guarantee perfection. The Filmmaker mode in the TCL C7K is not without its flaws. There can be criticism of the incorrect white balance, particularly a slight dominance of blue, which resulted in cool, somewhat greyish skin tones. But that was not the biggest issue. The main complaint was the 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 texture of scenes but also the overall viewing experience. Some details were simply lost, and the entire image looked as if someone had slightly overcooked the brightness slider. As always, we decided to check what could be extracted from this after calibration. And that’s where it started to get really interesting…

Sharp GR8 is one of those televisions that truly gains a second life after proper calibration. Both in HD and 4K content, the white balance performs very well, especially when considering the price segment of this model. The image becomes much more aligned with what the director intended to show – colours look natural, and skin tones acquire the appropriate depth and warmth. The brightness characteristics also make a very positive impression. Both gamma and the EOTF curve display really solid values. While minor imperfections can be noticed, they are subtle enough that they are difficult to detect during everyday viewing. In summary, calibration allows the Sharp GR8 to showcase its best features, offering an image that is not only pleasant to the eye but also faithfully reflects the creators' intentions.

After calibration, the TCL C7K showcased itself in a really good light, especially when it comes to SDR content. We managed to precisely tune the white balance, colour gamut, and brightness characteristics to the point that colour errors on the ColorChecker palette dropped below a value of 2. For the uninitiated – this is nearly a perfect result, which means that the image is very close to what the creators intended. Unfortunately, the situation was worse with 4K HDR content. Although we managed to gently stabilize the white balance and correct its previous errors, it was still evident that the television has certain "MiniLED traits," especially in brightness management. When we checked how the C7K handled the EOTF curve on actual film scenes, rather than just on synthetic test patterns, it turned out that the screen still tends to slightly brighten the entire image. This impacts the overall experience – blacks lose 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 truly very good. After calibration, the C7K can display an image that can compete successfully with much more expensive models. Good colour tuning, natural skin tones, and pleasant brightness make movie sessions and everyday viewing of content more than satisfactory.

Sharp GR8 has been equipped with the "10-bit colour reproduction" feature, which theoretically should improve the smoothness of tonal transitions. In practice… well, the effect is surprising, but not in a particularly positive way. Even at the highest settings, it is difficult to notice any impact on the actual tonal transitions. Instead, the feature surprisingly smooths out what it shouldn't – walls, shirts, or other flat surfaces look almost like they have been freshly ironed. In the test, we had to note that there is simply no actual impact on tonal transitions.

As for image scaling, here Sharp GR8 performs significantly better. The television can give the image a plastic, smooth characteristic, meaning even lower resolution content looks quite good. Of course, with more demanding details, such as thin tree branches in the background, one can notice slight jaggedness, but it is not something that would significantly affect viewing comfort.

TCL C7K is equipped with a feature that, according to the manufacturer, is meant to smooth out unwanted colour transitions – a sort of rescue for less successful tonal shifts. It is called "Gradual Smoothing" and… well, it sounds ambitious, but in practice it works very poorly. Regardless of whether we set it to a low or high level, the difference is minimal. Worst of all, the feature can cut out elements from the picture that should be there. Fortunately, film grain remains untouched, so at least it doesn’t smooth everything indiscriminately, but still – it’s better to simply turn this option off.

When it comes to scaling lower resolution content, it is somewhat better. SD and HD materials look quite decent, although at times we had the impression that the image loses sharpness and becomes too soft – as if something took away its definition. Fortunately, with very low sources (e.g. 576p), there was no overscan effect, meaning the picture was not artificially cropped – everything fit on the screen as it should.

This is where Sharp GR8 has the chance to stand out from the competition in its price segment. The television is equipped with a 144 Hz refresh rate panel, which is an impressive achievement, especially if we plan to use it for dynamic content such as action films, sports broadcasts, or video games. Additionally, the manufacturer has ensured the presence of motion smoothing technology, commonly referred to as a “smoothness enhancer.” The user has three levels of adjustment at their disposal, allowing them to tailor the effect to their own preferences – from subtle smoothing to a more aggressive intervention in the smoothness of the image. This is a nice addition, particularly for those who mainly watch films and care about smooth, cinematic sequences without irritating stutters or frame drops.

The TCL C7K handles motion fluidity really very well. The matrix used in it offers a refresh rate of 144 Hz, which in itself suggests that this television is more than just a regular "60 Hz" panel. Furthermore – if we connect the C7K to a computer and set the resolution to Full HD. But we'll write more about this in the paragraph about gamers and PC collaboration. Returning to everyday use – both sports and films look very good here. Thanks to the fast panel and well-functioning motion smoothing, the C7K is great for watching matches, but also for movie screenings. In the menu, we find two sliders – motion blur reduction and flicker reduction – which allow us to adjust the fluidity effect to our own preferences. At lower settings, we get a more cinematic effect, with slight stuttering motion. At higher settings – the picture becomes more theatrical, fluid to the point of excess. Everyone has their own preferences – anyone can set it to their liking.

If the television has a 144 Hz panel and two full HDMI 2.1 ports, it is clear that it has been designed with gamers in mind. The Sharp GR8 offers exactly that – high refresh rates and the appropriate connections that will allow you to get the most out of modern consoles and PCs. It also features ALLM, which automatically switches the television to low latency mode, and VRR, which ensures the image does not stutter even during more demanding moments. In practice, everything works as it should, and it is hard to find fault with anything. However, there are some shortcomings. It lacks support for HGiG, which is a feature that better adjusts HDR for games, as well as Game Bar, which makes it easier to quickly adjust settings without leaving the game. Despite these drawbacks, the Sharp GR8 is truly a solid option for gamers.

The TCL C7K is a television that on paper appears to be the dream equipment for gamers – and most importantly, it holds up in practice too. To start with good news: there are two full-bandwidth HDMI 2.1 ports, so we can easily connect both a console and a computer, taking advantage of all their capabilities. The panel itself supports a refresh rate of 144 Hz, which gives a significant advantage in dynamic games. There is also a complete set of gaming features: VRR (variable refresh rate), ALLM (automatic low-latency mode), and support for Dolby Vision in games. There is also the HGiG mode, which allows for HDR effects consistent with the creators' intentions. GameBar, an information bar for gamers. It works quickly, looks clear (like a Nintendo console👌), and shows what matters most: the current frame rate, VRR status, and even HDR parameters.