Samsung Neo QLED QN85D / QNX1D vs TCL C75B

The HDR performance of the Samsung QN85D is a mixed bag. While it excels in synthetic luminance tests, reaching up to 1000 nits, and delivers impressive results in scenes with full-screen brightness – like in The Meg or the opening of Life of Pi – the limitations become apparent when smaller bright elements are introduced. In these cases, the brightness level noticeably dips, weakening the HDR effect and reducing its impact. When brightness hovers around 200-300 nits, the immersive “wow factor” of HDR tends to diminish, and visuals lose some of their intended brilliance.

That said, the QN85D still manages to deliver decent colour quality, covering 95% of the DCI-P3 colour space, which, while respectable, doesn’t set it apart from its top competitors. Colours appear accurate and vibrant, but the HDR experience could be more compelling if the brightness was consistently well-balanced across various content types.

During our luminance test, the TCL C75B "spat out" about 380 nits of brightness. We recorded similar results while watching most of the films we tested. These can be considered average – the television does not perform badly in this segment, but around 400 nits is definitely too low to fully experience the magic of HDR effects. Of course, such results are better than those of budget models, which can achieve nearly half as low brightness values. However, for HDR enthusiasts seeking stronger light effects and greater realism, the C75B may prove insufficient. On the plus side, it's worth mentioning the 95% coverage of the DCI-P3 color palette. This is a very good result that easily suffices to enjoy a wide range of colors in content available on popular streaming platforms. Vivid and rich colors are definitely a strong point of this model.

The Samsung QN85D, when tested in Filmmaker Mode, falls short of expectations for film accuracy due to several notable issues in colour and brightness reproduction. In HD content, the white balance is skewed by an excess of red and blue, causing a pinkish tint across the image. This effect, confirmed by Colour Checker tests, impacts the realism of skin tones and other details, becoming particularly distracting in complex scenes.

For 4K HDR content, while the white balance intially appears accurate, there is a pronounced shift towards blue tones at the upper end of the spectrum. This deviation results in colours that lack natural appeal, subtly detracting from the viewing experience. The gamma, although close to the standard reference, slightly dips below the ideal 2.4 level, reducing shadow depth. Moreover, the EOTF curve for 4K content is noticeably elevated above the reference line, leading to excessive brightness in certain image areas. This undermines the cinematic look Filmmaker Mode aims to deliver, creating a visual experience that feels over-bright rather than authentically nuanced.

In summary, while Filmmaker Mode on the QN85D initially presents a cinematic effect, the inaccuracies in colour balance and brightness are too significant to achieve the true-to-source quality that the mode promises.

TCL C75B offers many picture modes, but in our opinion, the best choice is the "Film" mode. Although its settings are quite good, the television struggles with certain color reproduction issues. In tests, we noticed that the image had a noticeably pinkish tint compared to what could be considered correct. This effect was particularly noticeable in skin tones, which appeared unnaturally warm. The main culprit of this phenomenon turned out to be the white balance, characterized by an excessive amount of blue and red in both HD and 4K HDR materials.

Another issue was the way brightness was reproduced. The gamma, which is responsible for the visibility of details in darker materials, was definitely boosted, causing details in the darkest parts of the screen to be invisible, lost in total blackness (e.g., the bottom part of the screen in the comparative photo - the area around the actress's ear). Similarly, the situation was reflected in the EOTF curve, which was below the correct value, suggesting that a similar problem may be encountered in 4K HDR content.

Thanks to our experience and the appropriate tools, we decided to take matters into our own hands and see how much could be extracted from this model after professional calibration. Details are described in the next section.

After professional calibration of the Samsung QN85D’s Filmmaker Mode, there's a noticeable enhancement in HD/SDR content quality. The calibration eliminates major issues with white balance, and adjustments to the brightness characteristics result in a more natural and lifelike picture. Regular HD content, like television broadcasts and YouTube videos, now benefits from well-balanced colours, free from the distracting hues that previously impacted image quality.

However, challenges remain with 4K HDR content. Despite calibration, improvements in white balance for HDR are minor, and more cosmetic than transformative. The EOTF curve initially aligns with reference standards in test conditions, but the television struggles to maintain consistent brightness during film scenes. As a result, dark elements appear overly boosted in mixed scenes, creating excessive contrast. In fully dark scenes, the image often becomes too dim, obscuring finer details and diminishing the overall viewing experience. This inconsistency in brightness affects the depth and accuracy of HDR performance, especially in more challenging scenes.

After calibrating the TCL C75B, it has clearly improved in terms of color reproduction. Although the TV does not offer many options for adjusting the white balance, we were able to refine its settings significantly. As a result, the image has stopped being overly pink, and the colors now look much more natural and harmonious.

The gamma jump, which was previously a problem, has not disappeared completely, but we managed to significantly reduce it. This has made the details in dark scenes more visible – both in HD and 4K HDR material.

Unfortunately, the lack of local dimming is still noticeable. The "glowing black" effect remains, but that's a limitation of the display itself. Despite this, the colors after calibration look vastly better, and the image is much more enjoyable to watch.

When assessing the fluidity of tonal transitions in low-resolution materials on the Samsung QN85D, it's important to consider the noise reduction feature, which significantly improves problematic tonal transitions. However, this feature also has its drawbacks – it removes film grain, a crucial element in many productions that adds authenticity, and it can also soften the image. While this may appeal to those who prefer a smoother image, film enthusiasts who favour the authentic look of films may want to use this feature sparingly.

In terms of image scaling, the television performs very well. The model's figure is presented correctly, without noticeable distortions, and the branches in the background do not suffer from excessive artificial sharpness, a common issue when scaling lower-resolution content. The high capabilities of the image processor are evident, as it effectively handles lower-quality materials, ensuring a high-quality final image.

The TCL C75B has a tonal transition smoothing feature, but unfortunately, we can't praise it. Regardless of the selected level – low or high – tonal transitions in older materials remained visible, as if the feature didn't work at all. It's hard to say something positive about it because, in practice, it seems completely useless.

The image scaling is better. The TV performs quite decently, although on thinner elements, like branches in the background, you can notice slight halos. However, this is not something that significantly interferes with daily viewing.

Unfortunately, a bigger problem turned out to be overscan, which is the trimming of the image edges. In our tests, it happened that news tickers or other elements close to the edge of the screen were cut off. This is definitely something worth paying attention to, especially if we use the TV for watching news programs or content with text on the screen.

The Samsung QN85D’s display boasts a 120 Hz refresh rate, which should satisfy both gamers and sports enthusiasts, providing a smooth and dynamic viewing experience. There are options for further improving fluidity, including a blur and judder reduction feature that allows precise adjustment of motion smoothness on a 10-point scale. Blur reduction enhances the sharpness of fast-moving objects, making action scenes clearer, while judder reduction smooths motion to eliminate the "stuttering" effect. Ghosting is generally well-controlled, although minor drawbacks may be noticeable in more demanding scenes, particularly when an object moves against a dark background. Additionally, the television features a BFI (Black Frame Insertion) option at a 60 Hz frequency, which can significantly enhance motion smoothness, although it comes with the potential downside of flicker, which may be bothersome for some viewers.

TCL C75B definitely has something to offer gamers. The TV is equipped with a panel that can display images with a refresh rate of 144 Hz in 4K, and even 240 Hz in Full HD. These are really great results, especially for a model from the budget range.

Additionally, there are features for improving smoothness and reducing motion blur in films. The "Motion" option allows for precise adjustment of the effect on a 10-step scale, providing a lot of customization options – everyone can set the smoothness to their liking.

The Samsung QN85D is an excellent choice for gamers, offering a wide range of features that elevate gameplay quality and make it even more immersive. With a 120 Hz refresh rate, the image remains incredibly smooth, crucial during fast-paced action scenes in games. The TV also boasts low input lag, making player responses to commands almost instantaneous, enhancing control over characters and events on screen. Additionally, the Samsung QN85D supports VRR (variable refresh rate) and ALLM (auto low latency mode) technologies, optimising image fluidity and reducing lag by automatically adjusting the TV to meet gamers' needs.

The Xbox app, which enables cloud gaming without requiring a console, is another significant advantage, offering a seamless gaming experience without the need for additional hardware – a feature that sets Samsung TVs apart. The Auto Motion Plus Game feature is another notable addition. This motion smoother simulates a higher frame rate, making 30 fps games appear smoother, akin to 45 fps, while games at 60 Hz are upgraded to a 90 Hz experience. Most importantly, this feature does not introduce significant lag, ensuring the comfort of gameplay remains intact. It allows gamers to enjoy a smoother image without compromising responsiveness.

The TCL C75B is undoubtedly a television designed for gamers. It offers almost everything that the most demanding console users need. With the implementation of full-bandwidth HDMI 2.1, the television supports features such as ALLM (automatic low latency mode) and VRR (variable refresh rate) – operating across the full capabilities of the TV, up to 240 Hz in Full HD resolution.

Additionally, the television supports advanced HDR technologies, including Dolby Vision and HGiG, which allows for even better detail representation in HDR-optimized games. The C75B is also equipped with a very convenient interface for gamers in the form of a Game Bar, where you can check all key parameters, such as refresh rate, input lag, or picture settings – all within one click's reach.

In a nutshell: the C75B is an excellent choice for gamers, offering a wide range of features that allow for fully enjoying the capabilities of modern consoles and games.