TCL C655 / C69B (55"-85") vs Philips PML8709

Generally speaking, the quality of the HDR effect on the TCL C655 / C69B looks quite promising. The average value in the test charts is around 450 nits, which already allows one to feel the light effects and better image dynamics. However, as previously mentioned, this effect may be partially subdued by slight differences in bright and dark colours, resulting from the lack of local dimming technology. However, the coverage of the DCI-P3 colour palette at 94% deserves high praise, and this is made possible by the use of a quantum dot (QLED) matrix. As a result, colours are vivid and accurately represented when watching HDR content.

Looking at the results of the contrast, we expected that the algorithms responsible for the operation of zones in the Philips PML8709 would be at least decent. However, what we encountered during testing is difficult to explain. The average brightness we managed to achieve was only 350 nits, which is definitely too little to fully enjoy the effects of HDR. In practice, the television barely stands out against the backdrop of an average SDR. The situation becomes even more surprising for test scenes, such as the second one from the film Life of Pi or Sicario 2. Small light elements reach only 120 nits there, making them practically imperceptible. Such a level of brightness is completely at odds with contemporary HDR standards and significantly diminishes the experience of watching high-quality content. The only bright spot in this category is the very good coverage of wide colour gamuts – DCI-P3 at 97% and BT.2020 at 83%. This means that the colours are saturated and well-reproduced, which may improve the overall experience of watching HDR materials, if only a little. However, the lack of adequate brightness means that even this cannot save the Philips PML8709 in this category.

The television TCL C655 / C69B offers a film mode that has been tested for colour reproduction quality. Although this mode is called film mode, it unfortunately has several errors that a director would surely not want to see when recording their work. Starting with image analysis, it is worth examining the white balance – both in HD and 4K HDR content, the white balance has significant errors. In both cases, the red colour dominates, causing the colours to be too warm, and the overall result takes on a pink or yellow tint. This can be seen in the image below from the film "Star Wars". The Colour Checker test confirms these errors – the colour samples veer into incorrect shades, affecting the overall colour fidelity. A less significant issue is the brightness characteristic. However, this is also not without its flaws. The gamma graph shows a strong peak at the beginning, causing the image to be excessively brightened, and the EOTF curve responsible for brightness in 4K HDR material also has substantial fluctuations – it is noticeable how the television tries to maintain the appropriate brightness, but it does not always succeed effectively.

Although theoretically the Filmmaker mode on the Philips PML8709 should provide natural colour reproduction, in reality it resembles store mode more closely. In the white balance, both for HD and 4K content, there is a clear dominance of the blue colour. This causes the image to appear washed out and cold, which is particularly noticeable in the comparative photo below.

The brightness characteristics also leave much to be desired. Both the gamma and EOTF curve show excessive screen brightening. As a result, there is a loss of detail in both the brighter and darker areas of the image, which further diminishes its credibility and naturalness. Bright elements appear unnaturally flat and lacking in variety.

These significant issues in white balance and brightness characteristics lead to noticeable errors in colour reproduction, which can be easily seen in films as well as in the Colour Checker test. The colours are inaccurate, impacting the overall image quality and visual experience. The factory settings require significant improvement in order to fully enjoy the potential of this television.

After calibrating the television's film mode TCL C655 / C69B , the white balance has been adjusted, and the colours are presented as they should be – confirmed only by slight deviations in the Colour Checker test. The gamma is really quite accurate, which means the television should not have issues with brightness in low-resolution materials. Unfortunately, a similar EOTF characteristic is still visible, which is a natural phenomenon in televisions that do not have local dimming – they simply struggle to "shine" more in a given area of the screen. Despite this inherent limitation that cannot be bypassed, we recommend adjustment in the settings, as the overall colour presentation looks really very good.

Philips offers advanced image calibration tools in its televisions, which we decided to fully utilise. The results? Although we managed to improve many aspects, it was not without difficulties. White balance was one of the biggest challenges – despite our efforts, this can be described as a fight against windmills. We managed to correct it significantly, resulting in the image now looking much better than in the factory settings, but it is still far from perfect. Particularly in some scenes, a subtle dominance of blue is visible, although not as intense as before. We achieved a substantial improvement in brightness characteristics – gamma now appears much more stable. The EOTF curve initially looks correct, however, when analysing film content, it is evident that the television struggles to maintain the appropriate characteristics. The algorithms are "battling," trying to adjust brightness, which may stem from the limited number of dimming zones that do not always cope with more complex scenes. Overall, the image after calibration looks much more pleasing to the eye – colours are more natural, and errors in colour reproduction have been minimised. Although it is still not perfect, the Philips PML8709 now performs significantly better than in the factory settings.

The television TCL C655 / C69B handles tonal transitions fairly well in low-quality materials. The "Gradual Smoothing" feature at a low setting effectively smooths out tonal transitions; however, it simultaneously blurs significant details, such as the texture of objects. On the plus side, it does not negatively impact the film grain, allowing the natural appearance of the image to be preserved. As for digital processing, the television adds artificial sharpness, which may appeal to some users who prefer a sharpened image. However, for those who prefer a softer look, this could be a disadvantage. A notable downside is that the image has been quite significantly cropped due to what is known as overscan, which reduces the field of view and trims the edges of the image.

The distortion reduction function in the Philips PML8709 smooths tonal transitions, but its effectiveness leaves much to be desired. We recommend setting this option to "Medium" – at this level, the effect is noticeable but not excessive. Unfortunately, compared to other Philips models, the smoothing effect is less effective, which means that certain tonal transitions may still appear a bit uneven. An additional drawback is that this function also smooths out other details, such as the textures of materials like a shirt, which can affect the sharpness of the image.

When it comes to image scaling, the television performs very well. The image appears plastic and free of noticeable "jaggedness." This effect may appeal to many users, although some may prefer a more pronounced appearance. Fortunately, the television allows for sharpness adjustment, and this enables us to tailor the image to individual preferences.

The television C655 / C69B is equipped with a 4K@60 Hz panel, which means it works best for watching films and less dynamic content. It also features a "Flicker Reduction" function that allows for the adjustment of image smoothness – the user can choose whether they prefer smoother motion or a more cinematic, frame-by-frame effect. The television can also adapt to lower resolutions, such as Full HD and 2K at 120 Hz, which will surely please gamers by offering a smoother image at the cost of resolution. It is worth noting that this feature is available in sizes from 55"+. Additionally, the largest variant, 98", is equipped with a 144Hz panel with full motion smoothing.

The Philips PML8709 is one of the few models with mini-LED technology on the market, offering a refresh rate of 60 Hz. Although it is not a panel for the most demanding gamers, it should satisfy those who mainly watch films. The television is equipped with the "Motion Style" function, which is a motion smoother that allows you to adjust the smoothness of motion according to preferences – from a more "plastic" look to a cinematic aesthetic with clearly visible frames.

The TCL C655 / C69B television offers nearly the perfect set of features for gamers, supporting all the most important technologies. It has an ALLM feature that automatically switches the TV to low latency mode, significantly improving responsiveness and minimising signal lag, which is especially important during dynamic gameplay. The VRR feature allows the screen refresh rate to synchronise with the frame rate generated by the console, eliminating screen tearing and providing smoother gameplay.

The television also supports Dolby Vision in game mode, which ensures better colour and contrast rendering in games that support this format, and the Game Bar provides quick access to settings related to gameplay, such as response time, latency level, and other parameters. Unfortunately, the C655 / C69B does not support 4K resolution at 120 Hz (the exception here is the 98" variant), which may be disappointing for more demanding gamers who expect the highest fluidity of image in high-resolution games. However, if we can forgo 4K, the television offers support for Full HD and 2K at 120 Hz, providing a smoother image and is a great alternative for those who prefer a higher refresh rate at the expense of resolution.

Philips PML8709 is a television aimed more at casual gamers, primarily due to its 60 Hz panel, which may not meet the expectations of the most demanding users. However, for those who appreciate gaming at a more measured pace, this model may prove sufficient.

The television offers several gamer-friendly features, such as ALLM (automatic switching to game mode) and VRR (variable refresh rate), which help deliver smoother visuals without annoying stutters. Furthermore, in terms of HDR, it includes an HGiG implementation that adjusts HDR effects to the specifics of games, providing a more natural image in properly optimised titles. Unfortunately, it lacks support for Dolby Vision mode, which may be noticeable in games that utilise this format.

A nice addition is the presence of a basic "Game Bar," which allows for quick viewing and modification of the most important gaming-related settings. This is a simple but useful feature, especially for those who often switch configurations between different types of gameplay. Despite some limitations, Philips PML8709 offers a solid set of features for less demanding gamers.