Philips OLED950 vs LG OLED C6 (WOLED)

OLED950 is a phenomenal TV for consuming HDR content, which is primarily due to the use of innovative Tandem OLED technology. With this technology, the screen is capable of generating astronomical brightness values, reaching over 2000 nits in movie scenes (on test screens). This is an outstanding result, placing the OLED950 model among the very top displays available on the market. However, it should be noted that there is a specific characteristic of this solution – at moments when full-screen bursts of light appear on the screen, the brightness can drop by as much as half. Nevertheless, it is worth emphasizing that values above 1000 nits on a full screen are still an outstanding result. This allows for HDR images to be displayed exactly as filmmakers would wish, maintaining the dynamics and impact of light scenes.

The use of Tandem OLED technology has also brought measurable benefits in terms of color reproduction, improving elements where traditional WOLED panels have had difficulties compared to QD-OLED competitors. In the case of the OLED950, the color gamut coverage is broader than in classic WOLED panels, reaching nearly 100% of the DCI-P3 space and a solid 82% of the demanding BT.2020 palette. Although these results still do not match the high achievements of QD-OLED panels, the difference diminishes during real-world usage. We cannot deny that in the vast majority of films, colors look simply fantastic on this model – they are saturated, vibrant, and full of depth.

The HDR effect on the LG C6 is really very good. LG Display's new WOLED panel primarily brought a significant increase in brightness. In our unit we measured around 1,500 nits and, importantly, the TV can show similar values in many normal movie scenes. That gives HDR the proper impact. Bright highlights, lamps, or sunlight can be really strong, and most HDR movies simply look very impressive. Of course it's still an OLED, so brightness drops in scenes with a lot of white. The fifth scene of The Meg illustrates this well, where the C6 reached about 600-700 nits. That's still a very good result, but it also shows the new panel hasn't removed all the limitations typical of OLEDs.

Colors

When it comes to color, there is also little to complain about. The C6 covers about 99% of the DCI-P3 gamut and roughly 75% of BT.2020. In practice the colors are very saturated and, importantly, stable regardless of the scene. That's worth emphasizing, because not every TV behaves the same in this respect. In some RGB Mini LED models color saturation can depend more strongly on image brightness. Today a wider color gamut is mainly offered by QD-OLED TVs and new SQD models with a new generation of quantum dots. However, the C6 still performs very strongly here and is able to generate appropriately saturated colors in most movie scenes.

We tested the OLED950 model in Movie mode. Although it is theoretically the best and most faithful preset on this television, in practice, it proved to be not without flaws. Interestingly, in the unit we tested, the biggest challenge wasn't the white balance itself – although it did have a slight tendency to give the image a pinkish tint. The main problem lay in the way the television managed brightness, both in everyday SDR content and in demanding HDR scenes. Analysis of the gamma chart and EOTF curve leads to one key conclusion: the television excessively highlights brightness in the lower registers. This results in the image appearing less contrasty than the panel technology would allow. Details in dark areas that should remain perfectly black (characteristic of "OLED black") are simply unnecessarily highlighted and brightened. Fortunately, these errors can be corrected using the appropriate tools, so – as always – we proceeded with professional calibration.

Right out of the box the LG C6 is pretty well set up, especially if you choose Filmmaker mode. In SDR material the white balance is decent, although as brightness increases it starts to lack a bit of red. The picture becomes a little cooler as a result, but it’s not such a big difference that it stands out during normal viewing. More happens in the brightness response itself. Gamma is a bit low and instead of holding at 2.4 it sits closer to 2.1–2.2 over much of the range. In practice the C6 slightly brightens midtones. Shadows are therefore more readable, but the image loses some depth compared with how it should look in a dark room. In HDR the situation is a bit more interesting. The start of the grayscale looks very good, but from about 20–30% brightness the white balance starts to drift more and more. As brightness rises there’s more red and a noticeable lack of blue. In the brightest highlights the difference is already significant and also affects reproduction of some colors. The EOTF curve itself is handled fairly well over most of the range. The C6 only has a tendency to slightly brighten the image, which we also saw during our film comparisons. The largest deviation appears around the brightest highlights, where the TV begins to adapt the signal to the panel’s capabilities. So the out-of-the-box Filmmaker mode in HDR isn’t perfect, but overall it performs well. The biggest room for improvement is the white balance, especially at high brightness.

As can be seen, the OLED950 transforms into an absolutely phenomenal display after a professional calibration process, which without a shadow of a doubt can be placed in the same category as the best televisions currently available in the world. This equipment only needed a professional touch to show its full potential and eliminate factory shortcomings. The minimal errors in reproduction in Color Checker tests and the fidelity of the color palette speak for themselves. We are dealing with an almost perfect device here. A true window to the world, offering top-notch image quality.

LG TVs have been very receptive to calibration for years, and the C6 is no exception. After adjustment the white balance was set almost perfectly, and most color errors dropped to values below 3, often even around 2. In practice this means very accurate color reproduction in both SDR and HDR. An interesting detail appeared only with the HDR brightness characteristic. On a classic EOTF chart everything looks nearly ideal, and at first glance it would be hard to find fault. Only when we measured the TV’s behavior using filters based on actual movie scenes did it become clear that the C6 has a slight tendency to artificially boost image brightness.

It’s not a huge difference and many people may even see it as a positive, because HDR looks a bit more impressive this way. From the standpoint of fidelity to the source material this isn’t ideal — some scenes are simply a touch brighter than the filmmaker intended. Interestingly, this is somewhat unusual for LG. In previous generations, the brand’s TVs typically stuck very closely to the reference tone curve after calibration. With the C6 we’re still very close to the standard, but that subtle boost in brightness is indeed noticeable in films and series.

Upscaling

In terms of image scaling, the proprietary P5 processor performs just as well as in most models from this manufacturer. Lower resolution content takes on a very soft and plastic character. Such a presentation will certainly appeal to many. However, if you prefer sharper contours, you can gently enhance them with the appropriate slider in the TV menu. In this aspect, it's really hard to pick on anything. The image simply looks very good and additionally there is no problem with the phenomenon of overscan.

Smoothing and Distortion Reduction

The tonal transition smoothing feature fares a bit worse. In the settings, we find an option called “Distortion Reduction.” This allows for three levels of processor intervention adjustment. Unfortunately, the Minimum setting works poorly and the smoothing effects are negligible. The Medium level gives a decent result, but it also starts to smooth out the skin details of actors. On the other hand, the Maximum setting works too aggressively. It removes definitely too many details from the face and background elements or can even take away the film grain. To achieve the optimal effect, it's worth playing around with these settings at home and adjusting them to your preferences. It might seem that the Medium option represents the best compromise here.

The LG C6 has taken a really big step forward here. The TV uses the same processor found in the flagship G6, and in terms of image processing the two models are very similar. That’s a big plus, because in this area LG’s processor this year performs excellently. The "Smooth Gradation" feature works especially well. With heavily compressed material it can effectively hide ugly tonal transitions and artifacts that often appear, for example, in lower-quality streaming. It’s best to leave it set to "Low." Then the improvement is clear, and the TV doesn’t yet start blurring fine details. Higher levels smooth the image more, but can already remove some of the natural texture of objects on the screen. The upscaling itself also performs very well. Lower-resolution content is sharpened properly, edges look clean, and the processor quite effectively rebuilds fine details. In this regard the C6 is already very close to LG’s best TVs, and the differences compared with the G6 are small.

The motion representation in the OLED950 model is virtually perfect. This is typical for screens of this type (OLED 120Hz+), as the matrix shows no blurring at all. Thanks to this, we can enjoy flawless sharpness in practically any conditions. A big part of this is not only due to the specifics of organic technology. Equally important work is done by the smoothing systems implemented by the manufacturer.

The LG C6 features a panel with a maximum refresh rate of 165 Hz, which is great news especially for gamers using a powerful PC. For movies, sports, or consoles we'll of course use up to 120 Hz, but even then it's hard to fault the motion clarity. As you'd expect from an OLED, the panel's response time is almost instantaneous. Moving objects therefore don't leave the characteristic smears you still see on LCD TVs. This is particularly noticeable in sports and fast-paced games, where the picture remains very clean even during dynamic motion.

For movies and TV, LG also provides the TruMotion motion-smoothing system. In the user settings you'll find two separate sliders. De-Judder is mainly for low-frame-rate content, that is primarily 24 fps films and series. It can slightly reduce the characteristic judder, or be set higher if you want a much smoother image. De-Blur is useful for higher-frame-rate material, mainly sports broadcasts and 50/60 fps television.

OLED950 is almost the perfect TV for gamers. This is not only due to the unique atmosphere that the Ambilight system creates during gameplay. The most important aspect here is the solid hardware support. We find literally everything that one should expect from a modern gaming screen today. The manufacturer has implemented two HDMI 2.1 ports with full bandwidth of 48 Gb/s. This gives us access to gaming in 4K resolution at 120 frames per second. Of course, support for VRR technology and the ALLM automatic game mode is also included. The device handles any HDR signal effortlessly, whether we are using Dolby Vision or the HGiG standard.

Access to all settings is available from one place thanks to the special Game Bar overlay. Although this interface may not be the most graphically attractive on the market, it fully serves its purpose. It displays all the most important signal parameters and offers useful additions. Gamers can take advantage of the mini-map zoom function or add a permanent crosshair on the screen, which can be seen as a small aid in online competition. Adjusting the contrast range also proves useful. It allows for brightening shadows and achieving better visibility of enemies hidden in the dark corners of the map.

LG has focused heavily on gamers for years, and the C6 really lacks nothing important. The TV supports 4K at 120 Hz from consoles, and when connected to a PC it can run up to 165 Hz. It also offers VRR from 40 to 165 Hz, ALLM, and properly working HGiG. A big plus is Dolby Vision support for games, so the Xbox Series X can use that format without sacrificing game mode. The package is rounded out by a Game Bar that lets you quickly check key signal parameters and change settings without leaving the game. In terms of features, the C6 is one of those TVs that’s really hard to find fault with. Whether you play on PlayStation, Xbox, or PC, practically everything you could expect from a modern gaming TV is available here.