Philips OLED820 vs TCL C7L

When it comes to HDR quality, the Philips OLED820 uses the same class of WOLED panel found in its biggest rivals – the LG C5 and the Samsung S90F. This means we can expect really solid results. This year, mid-range OLED panels can exceed the threshold of a thousand nits, and the tested model reaches around 1300 nits in some films. This is an outstanding result, allowing the director's vision to be conveyed with incredible precision, as this is the brightness range in which modern productions are mastered. Of course, there are situations where even the OLED820 has to compromise. Full-screen scenes flooded with white, like those in the film The Meg, can drop brightness to 400–500 nits, which clearly diminishes the effect. This is a characteristic of OLED technology that has not yet been fully eliminated. Despite this limitation, it's hard not to appreciate the HDR in this model – high luminance and a wide coverage of the DCI-P3 colour palette at 99% make the image look simply fantastic.

TCL C7L is undoubtedly an extremely bright television. In synthetic tests on static patterns, it can achieve peak brightness of around 2800 nits. This is a phenomenal result, considering the price range it occupies. Unfortunately, tests with real movie scenes are not as spectacular as measurements of white squares. Brightness in real HDR footage drops in the C7L model to around 1200 nits. This is still a very good result, as this is the value at which the vast majority of contemporary films are mastered. However, when small, point-like elements appear on the screen, the brightness of these details drastically drops – even to around 400 nits – which somewhat diminishes the HDR effect. The television does this intentionally to maintain a better black level and to avoid a huge light bloom. This is somewhat explainable, but it also shows that Mini LED technology is not completely uncompromising in this regard. As for the HDR effect itself – alongside brightness, colours are of course key here. And these, thanks to the use of new, “super” quantum dots, are simply outstanding and among the best on the market. The television can achieve around 90% coverage of the ultra-wide colour gamut BT.2020 and 99% of the DCI-P3 gamut, easily matching the best RGB MINI-LED screens. Best of all, the C7L can maintain such high colour saturation regardless of the scene being displayed, which can often be problematic in competing RGB Mini-LED televisions.

The colour reproduction in the factory settings really surprised us, and in a positive way. The Philips OLED820, switched to Filmmaker mode, immediately showed that it was quite well tuned in terms of colour. The white balance was relatively accurate, although there was a slight deficiency in the blue hue, which sometimes gave the image a slightly yellowish tint. However, this is not a drawback that particularly interferes with everyday viewing. A bigger problem arose with the brightness characteristics. The gamma chart clearly deviated from the ideal, as the line was below the expected values, causing the image to be excessively brightened, and the colours looked as if they were covered with a light milky filter. This effect was also noticeable in tests using the Colour Checker pattern, where more pronounced errors appeared.

When it comes to out-of-the-box colours, a new feature in TCL TVs – including the C7L model – is the presence of a new picture mode called Filmmaker Mode. This is significant news, as such a mode was not previously available from this manufacturer. By design, as the name suggests, the picture in this setting is intended to be delivered with the full intent of the film's creator. After our tests, we can confirm that it is undeniably the best built-in mode in this TV if you value true-to-life colour reproduction straight out of the box. However, we certainly wouldn’t say it is perfect. Like most devices on the market, this C7L also had its factory faults. The white balance in Filmmaker Mode leaned towards a slightly greenish-yellow hue, mainly due to an excess of green component and a noticeable lack of blue. Of course, for the average viewer, this won’t be a drastic flaw, but if you value perfect whites, natural skin tones, and harnessing the full potential of these new "super" quantum dots from the structure, then the TV is begging for professional calibration.

After calibration, both the Filmmaker mode and the gaming mode improved quite a bit. A slight adjustment of the white balance and enhancement of the brightness characteristics yielded excellent results with SDR content – the image looked nearly perfect, natural, and very close to the reference. For HDR material, the situation was similar; the colours looked fantastic, and it was hard to find fault with anything. However, we did notice a certain characteristic, which we had already pointed out when comparing scenes from the film Billy Lynn. The analysis of the EOTF curve showed that the TV has a slight tendency to dim details in the blacks, meaning that the darkest parts are not always displayed exactly as the director intended. Nevertheless, the effect after calibration is superb, and the OLED820 is emerging as one of the more interesting screens in its class. A little bit of fine-tuning is all that’s needed, and there’s really nothing to worry about.

After conducting a professional calibration, we were able to greatly improve the situation in the factory Filmmaker Mode. Following our adjustments, the errors in the ColorChecker test and across the entire wide colour gamut dropped below the threshold of human perception – that is, below a value of 3, which is indeed a very good result. The TCL C7L definitely benefits from such a treatment in terms of colour fidelity, and it's hard to deny that. However, the management of brightness in HDR content after calibration appears to be a bit worse. As I described earlier – even though we set this model up properly, when we turn on real film scenes on the television, it can manage its brightness in quite a peculiar way. It often brightens certain elements on the screen in a manner inconsistent with the creator's intent, which is visibly apparent on the EOTF graphs measured in specific films. Despite this flaw – or rather, this specific characteristic of the television – one cannot take away from it: after calibration, the C7L was able to reproduce the colours flawlessly.

Fortunately, the earlier effects of the mentioned posterisation can be quite effectively mitigated. The "distortion reduction" feature set to medium handles unwanted colour banding well, improving the smoothness of tonal transitions. It does sometimes work a bit too aggressively and smooths out some details – such as the minor imperfections of the actors’ skin – but despite that, it can be considered worth using without major compromises. The upscaling in the OLED820 also performs well. The test image with the model is exceptionally soft, sometimes perhaps too much, although this can be remedied with a slight increase in sharpness in the picture menu – that's a matter of individual preference. The absence of overscan issues with very low-resolution content is also commendable, allowing us to not worry about the image being unnecessarily cropped.

This point could be called in a sense the Achilles' heel of the C7L model. Unfortunately, this television uses an older chipset from MediaTek – the Pentonic 700 – which has never been known for outstanding digital image processing. This is clearly visible in the functioning of the gradual smoothing feature, which is responsible for reducing jagged edges and removing digital noise. It simply works very poorly – when set to a low level, its effectiveness is practically none. The only small plus here is that the algorithm doesn't mess up anything else in the image and doesn't forcefully blur details. The upscaling, that is, the scaling of the image from lower resolutions to 4K, performs a bit better. It is simply adequate and does not stand out in any particular way against the competition. However, it cannot be denied that the C7L would greatly benefit in this aspect if the manufacturer decided to use the newer Pentonic 800 processor, which is now being found in an increasing number of competitive models.

Motion fluidity is an area where OLEDs always shine, and the Philips OLED820 confirms this rule. The panel itself offers a refresh rate of 144 Hz, which will mainly benefit PC gamers, but even with standard TV sources or consoles, where it operates at 120 Hz, motion is fast, sharp, and simultaneously smooth, without any signs of smearing. This is thanks to the remarkable response time between pixels, which ensures the image maintains clarity in every dynamic scene. The manufacturer has also added their own smoothness enhancer called "Motion Style." In the menu, we find two sliders – the first, responsible for smoothness, allows for the adjustment of the number of artificially added frames in films. This way, we can choose a raw, cinematic character with clearly visible film frames or a more theatrical image with smooth motion. The second slider is for motion blur reduction, particularly useful in sports broadcasts. Here, we definitely recommend setting it to the maximum value, as the effect is truly excellent.

TCL C7L features a native 4K panel with a refresh rate of 144 Hz, which can even ramp up to 288 Hz at lower resolutions when using a PC. These are certainly very high and commendable figures on paper, but in everyday life, it's worth remembering that almost all dynamic content you display on this television will still revolve around a maximum of 120 Hz. To tame this dynamism, the TV menu includes a motion smoothing system called "Motion Clarity." It offers several predefined modes, including a user mode, which we highly recommend setting manually using our tried-and-true guides on our YouTube channel. You’ll find two key sliders available. The first one, "Motion Blur Reduction," is responsible for reducing blurring and improving sharpness in 60fps dynamic content, such as sports broadcasts. The second slider, "Flicker Reduction," allows for the addition of artificial frames in movies and shows recorded at cinematic 24 or 30 frames per second. This naturally allows for the complete elimination of the annoying stutter effect during camera movement shots.

The Philips OLED820 is one of the most comprehensive TVs for gamers. Onboard, we find practically everything one could expect: two HDMI 2.1 ports with full bandwidth of 48 Gbps (shame there aren't four), Variable Refresh Rate (VRR), Auto Low Latency Mode (ALLM), support for Dolby Vision in games, and a good implementation of the HGiG mode. The TV also handles lower resolutions at 120 Hz without issue, so you can count on great flexibility when choosing different picture modes on your console. Philips also adds a Game Bar – a panel that allows you to change picture modes, add a crosshair, or preview parameters. Although it looks a bit clunky and is less refined than its competitors, it gets the job done. In practice, therefore, the OLED820, in addition to a full set of four HDMI 2.1 connections, offers almost everything a gamer could need.

When it comes to gaming, the TCL C7L is simply an outstanding television for gamers. With the presence of two full-bandwidth HDMI 2.1 ports at 48 Gbps, it provides access to all the key features that console and high-end PC owners require. We have a well-functioning ALLM mode with very low input lag and VRR frame synchronization, which operates within an impressive range from 48 to 288 Hz. Importantly, unlike some competitors, TCL has ensured a proper implementation of the console HDR10 HGIG profile and support for Dolby Vision in games. This is complemented by a very well-designed gamer panel, known as Game Bar, which even allows for editing its appearance and changing the theme to perfectly match the style of your console.

The only thing that can – and should – be critiqued here is the fact that the television only offers two full HDMI 2.1 ports, while the other two are older HDMI 2.0. This creates quite a significant logistical problem. Why? Because one of those fast ports also supports the eARC audio return channel. In practice, this means that if you connect a soundbar or home theatre system to the television, you’ll only have one available HDMI 2.1 port left. If you have two consoles or a console and a powerful computer at home, unfortunately, you’ll have to give something up or constantly juggle cables at the back of the unit while maintaining comfortable audio system control.