LG OLED G6 (G64LW, G66LS) vs Sony BRAVIA 7 II

The LG G6 is currently one of the brightest OLEDs on the market. Its peak brightness reaches nearly 2500 nits, and what’s best – this has a direct impact on real film scenes. The television flawlessly extracts details in the bright areas of the image. And this is regardless of whether we are talking about very small points like stars in the sky or slightly larger elements on the screen. Naturally, with full-screen, uniformly white scenes, the brightness of the G6 decreases due to the panel protection system (ABL). However, in real, varied cinematic shots, this value still hovers around 2000 nits, which can be considered an outstanding result. The coverage of the colour palette also deserves praise. The new second-generation Tandem OLED panel only brought a cosmetic change but still an improvement. The coverage of the DCI-P3 palette reaches nearly 99.5%, whereas for the ultra-wide BT.2020, it is around 84%. These are very good results, although it’s worth remembering one thing: at extremely high brightness levels, the colour volume will be lower than in Samsung Display’s QD-OLED panels due to the use of a white sub-pixel (WOLED). However, in everyday content and most films, catching this difference will be very difficult.

The Sony Bravia 7 II handles HDR very well and, above all, is simply a bright television. In the correct viewing mode, Professional, we measured around 2,000 nits of peak brightness, so the panel’s capabilities are truly significant. Of course, with Mini-LEDs a test pattern result is only part of the story, because a lot still depends on how the TV controls the backlight in real scenes. Here Sony’s algorithms perform very well. Depending on the scene, the brightness we measured in films ranged from roughly 1,100 to as much as 1,700 nits. That’s already a level at which HDR has proper punch and bright highlights can be genuinely impressive. It isn’t perfect in every situation, though. With small bright elements on a very dark background the Bravia 7 II clearly favours maintaining good blacks, which can cause their brightness to drop to around 500 nits. It still looks good, but you can see the TV does not always manage this without compromise.

Colours

The second thing that has a huge impact on HDR is, of course, colour. And this is precisely where True RGB technology was meant to bring one of the biggest changes. Looking at the panel’s capabilities alone, the Bravia 7 II performs very well. We measured about 98% DCI-P3 coverage and 88% BT.2020, so the potential to show strongly saturated colours is really large. In RGB TVs, however, the situation is a bit more complex. When we repeated the same measurements with a film background applied, palette coverage fell to around 92% DCI-P3 and 78% BT.2020. Those are still good figures, especially for an RGB Mini-LED TV, but they clearly show that the final result largely depends on how the algorithms control the three backlight colours. In most scenes the Bravia 7 II handles this well and colours retain high saturation. The biggest differences are visible in shades of blue, where samples begin to deviate more noticeably from reference values and coverage is weaker than for the other primary colours. True RGB therefore offers genuinely greater potential here, but, as with brightness, much depends on what is happening on screen.

We tested the LG G6 in the best factory mode in terms of colour fidelity, namely FILMMAKER MODE. In the case of our test unit, this mode was quite well tuned straight out of the box. In SDR content, the only issue we could point out was the white balance, which tended to drift towards warmer tones. Consequently, the image could occasionally appear slightly yellowed; however, overall, this was not an bothersome problem. The G6 performed a bit worse with HDR content. There, we noted too much blue component in the white balance, which caused the image to take on cooler hues, resulting in fairly noticeable errors. As can be seen in our ColorChecker chart, the colours indeed drifted towards these cooler registers. Nevertheless, considering the factory settings, the television displayed a perfectly decent level. We do know, however, that OLED screens – particularly those from LG – respond excellently to professional calibration, which is why we immediately went ahead with it.

To evaluate the factory colours we chose the Professional mode, because it performs best among the available settings. However, it is not perfect. In SDR the white balance drifts slightly towards magenta, making some scenes look a little warmer and less neutral than they should. A bigger problem is the gamma, which sits closer to 2.5 than to 2.4. This makes the image a bit too dark in places, particularly in the midtones. In HDR the situation is better. As brightness increases a little too much red appears, but this is not an issue that is highly noticeable during viewing. Overall the Professional mode is a good starting point, although you can get a bit more out of it after calibration.

After professional calibration, we gained complete control over the panel, and we managed to align all parameters to nearly zero. We successfully calibrated the white balance perfectly, which eliminated the factory cool and warm tints from the screen. The effects are clear as day in the ColorChecker test – the average colour reproduction errors dropped below the critical value of 1-2. And what does that mean? PERFECT colours, without any distortion! However, as reviewers, we must point out here how the LG G6 arbitrarily manipulates brightness, for which the EOTF curve is responsible. When looking at the standard synthetic chart, it might seem that the line is quite straight. However, the situation changes when we turn on the measurement filter, which shows how the television interprets brightness in real, moving film scenes (EOTF in MOVIES). Then it becomes evident that some of the tiniest parts on the screen are slightly over-brightened by the algorithm. Of course, for the average viewer, such a deviation will be practically unnoticeable, but in the test of such an expensive screen, it is worth noting – especially since we are talking about a model that has huge aspirations to be named the best television of the year.

After calibration the Bravia 7 II can look decidedly better. Above all, we managed to set the white balance very well, both in SDR and HDR. Gamma can also be improved, which after correction runs very close to the reference value. And in fact, for most users these changes will have the greatest impact on the picture. There is, however, a limitation when it comes to the colours themselves. In the Bravia 7 II Sony does not provide access to a classic CMS that would allow us to correct individual hues separately. A lot is therefore left in the hands of the algorithms controlling the True RGB backlight. If the TV misrepresents a particular colour, we are not always able to do anything about it. In our measurements this is most visible in certain reds and blues, where errors can still be quite large. This does not, however, undermine the point of calibration itself. Correctly setting the white point and gamma strongly affects the whole picture, so even without the ability to precisely correct every colour the difference compared with the factory settings is noticeable.

Whatever one may say about the G6’s problems with near-black signal, it must be fairly acknowledged that it handles heavily compressed material and lower resolution content exceptionally well. All unwanted, unsightly tonal transitions are effectively reduced here by the "Smooth Gradation" feature. At the "Low" setting, the algorithm works flawlessly – effectively masking the artefacts resulting from strong compression without destroying the sharpness and details in the frame. Higher levels of this function do indeed smooth the image further, but they start to blur the real elements of object texture, which is why we recommend keeping this slider at a low setting. As for the upscaling to 4K, the processor does an excellent job – edge sharpness and detail reconstruction are at the highest level, and in this regard, the G6 does not fall behind the world leaders at all.

Scaling and digital processing are among the strongest points of the Bravia 7 II and one of the bigger reasons to choose Sony over the competition. The manufacturer has been handling digital image processing well for years, and it shows here too. First and foremost, the 'Smooth Gradation' function works very well and can smooth out weak tonal transitions in lower-quality material. The safest setting is Low, but we would comfortably recommend Medium as well. The effect is stronger then, yet the TV still treats details very gently. Some fine details may be slightly smoothed, but Sony does this much more subtly than many other brands. The upscaling itself also performs very well. Lower-resolution material is well upscaled to 4K, the image looks clean and retains a lot of detail. Of course the TV will not magically turn native HD material into true 4K, but what can be extracted from such a source is handled really well by the Bravia 7 II.

LG G6 is an OLED television, so in the category of motion fluidity, it traditionally deserves the highest marks. The television supports very high refresh rates reaching up to 165 Hz in 4K resolution, but most importantly – on the screen, you will not notice any signs of blurring. The response time of the panel is almost instantaneous, ensuring that dynamic images remain perfectly sharp.

The Bravia 7 II uses a 120 Hz panel, so in terms of motion handling it delivers everything you would expect from a TV of this class. With sport or games at 120 fps, the picture is suitably smooth, and for films Sony provides an extensive motion interpolation system. You can therefore adjust the interpolation level separately and decide whether you want to preserve a more cinematic character to the motion or obtain noticeably smoother movement. The issue of motion blur itself is a little worse. The VA panel used is not among the fastest, and you can notice a slight trail behind moving objects, particularly on darker backgrounds. It is not at a level that greatly bothers during normal viewing, but last year’s Bravia 7 fared better in this respect and had a noticeably faster panel.

The LG G6 is a true monster for gamers and one of the best-equipped televisions on the market in this regard. The manufacturer has not skimped on features, equipping this model with as many as four full HDMI 2.1 ports with a maximum bandwidth of 48 Gbps. This means that no matter which port you plug in your PlayStation 5, Xbox Series X, or powerful PC, you will get the absolute maximum performance from them.

The television supports a full set of gaming technologies: from VRR (Variable Refresh Rate) to AMD FreeSync Premium Pro, and even Nvidia G-Sync Compatible. On top of that, it offers remarkably low, nearly imperceptible input lag and an exceptionally well-functioning Game Optimizer panel, which allows you to monitor signal parameters in real time. Gaming on this screen, with the perfect black of OLED and impressive refresh rates, is pure pleasure.

Bravia 7 II has basically everything you’d expect today from a good console TV. It supports 4K at 120 Hz, VRR from 48 to 120 Hz and ALLM, so when you start a game the TV automatically switches to a low-latency mode. It also has properly working HGiG, which means that after configuring HDR on the console the TV won’t try to brighten the image further on its own. You just need to remember to turn off tone mapping in the TV’s menu. Dolby Vision in game mode is also a plus, especially useful for Xbox owners. Sony adds its own Game Menu. From it you can quickly check key signal information, verify VRR operation or change gaming-related settings without digging through the whole TV menu. The only thing missing from the feature list is support for 1440p at 120 Hz.

Our biggest reservation is not really about the functions themselves, but about the connectors. The Bravia 7 II has four HDMI ports, but only two of them support full HDMI 2.1 at 48 Gbps. One of those is also an eARC port. So if you connect a soundbar or AV receiver to the TV via HDMI, in practice you’re left with only one full HDMI 2.1 for a console or PC. With a single console that’s no problem, but with a PS5, an Xbox and an audio setup it starts to get tight. And this is hard to excuse for Sony. In cheaper TVs two HDMI 2.1 ports can still be acceptable, but in a model of this class, especially in 2026, we would expect a full set of four such ports.