Philips OLED809/819 vs TCL C75B

The Philips OLED 809 delivers a highly satisfactory HDR effect. The television can reach luminance levels exceeding 900 nits in most scenes, and in some cases, even surpassing 1000 nits. This brightness ensures a rich and immersive experience for HDR content with a wide tonal range. The only exception occurs in a scene from the movie The Meg, where a large amount of bright white occupies most of the screen, preventing the TV from reaching higher brightness levels. However, this is not a significant issue, as the performance is still a considerable improvement over its predecessor.

Overall, these brightness levels, especially for an OLED panel not equipped with MLA technology, impress. Coupled with excellent coverage of the DCI-P3 colour spectrum, the Philips OLED 809 offers a truly spectacular HDR viewing experience.

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 best factory mode in which we performed all our tests was "Filmmaker," which is quite standard in televisions from this manufacturer. However, let’s first examine its characteristics before the calibration process. The first aspect we will focus on is white balance, as it is critical to ensuring the image remains free from any colour cast. The chart clearly shows that in both SDR and HDR materials, two colours dominated significantly: red and green, resulting in a strong yellow tint that affected the entire image. This was particularly noticeable on the "ColourChecker" palette, where all colours shifted towards their warmer counterparts.

The second aspect we will assess is what we consider to be the two most important charts for evaluating picture quality: gamma and the Electro-Optical Transfer Function (EOTF) curve. Both aim to maintain appropriate brightness and contrast. The first chart, which describes the brightness levels in SDR materials, shows that the brightness was significantly lower than the reference value marked by the orange line. This resulted in a sharp increase in brightness and a notable decrease in contrast, which was inconsistent with typical OLED television behaviour. The EOTF curve, on the other hand, showed greater "moderation," subtly brightening the overall image only up to 50% of the maximum brightness.

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.

Philips, like most leading manufacturers, has been providing advanced calibration tools for years. The inclusion of 2- and 20-point grayscale adjustments, along with an advanced CMS (Color Management System), has yielded extremely beneficial results and fundamentally improved the perceived image. Nearly every element previously mentioned has undergone a transformation and has been restored to its natural state. This is particularly noticeable in the "ColourChecker" palette, where the measured colour samples align harmoniously. Notably, the white balance has been excellently calibrated, ensuring a pure image free from unwanted tint in both SDR and HDR content. The previously problematic gamma has been well addressed, with only minor errors that do not impact the overall performance. Similarly, the EOTF curve has been refined, removing the subtle brightening effect, and now offers a truly reference-quality presentation.

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.

Philips OLED 809 struggled significantly in the smooth tonal transitions test. Focusing on the TV's algorithms, particularly the feature responsible for removing posterisation, the results were disappointing. This function, which offers several adjustable settings, proved ineffective in practice. The highest setting, while it does mitigate inconsistencies, it simultaneously blurs the entire image, rendering it virtually useless.

When dealing with lower-quality content, the performance of image upscaling algorithms becomes crucial. In this regard, the algorithms implemented in the OLED 809 perform admirably. They enhance image quality effectively, with minimal visible artefacts. Although slight edge fraying can occasionally be observed, it is unlikely to be noticeable during typical viewing sessions.

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 maximum refresh rate achievable on the Philips OLED 809 is 144 Hz, a feature that can be fully utilised when connected to a high-performance PC. However, when connected to consoles or used for standard television viewing, the refresh rate remains at typical values. For users seeking enhanced motion fluidity or wishing to eliminate the characteristic choppiness of films shot at 24 fps, Philips provides a sophisticated motion-smoothing system.

In the settings menu, there is a "Smoothness" slider designed to reduce choppiness, along with a "Motion Blur Reduction" option to enhance the sharpness of fast-moving elements. These features perform impressively and allow for granular adjustments, ensuring that each setting has a tangible impact on motion perception. Notably, the system operates effectively at a refresh rate of 120 Hz, taking advantage of multiples of video frame rates. With this comprehensive range of options, users can easily fine-tune the settings to suit their preferences. For example, slight smoothing without inducing the soap opera effect offers a balanced viewing experience.

Motion clarity on the OLED 809 is further bolstered by the exceptional response time of the OLED panel, measured at approximately 0.1 ms. This surpasses the performance of IPS/ADS or VA panels, making OLED technology unrivalled in this area.

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 Philips OLED 809 fully supports all technologies included in the HDMI 2.1 standard, and during testing, each activated without issue. This makes the TV an excellent choice for gamers, whether on console or PC. Notably, it features HGIG mode as a strong alternative to Dolby Vision, which is less ideal for gaming on this model due to its high input lag.

The TV also includes a dedicated GameBar for monitoring gameplay parameters and adjusting settings quickly. Features like a crosshair overlay for sniper shots, shadow enhancement for better visibility, and a colour filter for gamers with visual impairments further enhance its gaming appeal.

In summary, the OLED 809 is a fantastic choice for gaming, equipped with VRR, ALLM, G-Sync, FreeSync, and HDR Dolby Vision gaming for a deeply immersive experience. The only drawback is the artificial sharpness in game mode, which cannot be fully softened, regardless of settings.

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.