LG QNED91T6A vs LG OLED B6

As befits a MiniLED television, QNED91T LG easily exceeds the magic barrier of 1000 nits on the luminance chart. In scenes where light played a key role, the effect was truly decent. For example, 1000 nits in the first scene of "Life of Pi" is really an impressive value, and the 600 nits achieved in scenes three and five allowed us to feel the true magic of HDR. However, problems arise with very small light elements on the screen, such as the moon, lanterns, or lamps. A value of around 100 nits - to put it bluntly - is disappointing, as these elements are so dark that they are barely visible. It is worth praising the television for covering the DCI-P3 colour gamut at 96% and BT.2020 at 75%. LG QNED91T leaves us with mixed feelings, mainly due to very aggressive dimming algorithms, which, while effectively eliminating the halo effect, do impact the brightness of smaller elements.

The LG B6 is a moderately bright OLED. After calibration it reaches about 800 nits, roughly 200 nits more than last year’s B5. That’s thanks to the new budget OLED SE panel from LG Display. In practice it simply gives a bit more headroom and makes HDR in many scenes look fuller than on last year’s lower-tier OLEDs. That doesn’t mean the B6 has no limits. In very bright shots, when a large part of the screen is strongly lit, brightness can drop below 400 nits. This behavior is typical for OLED TVs (especially those from this segment) and that’s when you see the biggest difference versus more expensive models. All things considered, we rate the B6’s results as really solid. It’s still not a TV for breaking brightness records, but the HDR effect is strong enough that you can really feel the step up from ordinary SDR in films.

Color gamut

Using the OLED SE panel has slightly affected wide color gamut coverage. Compared with last year’s model, results fell by a few percentage points. DCI-P3 reaches about 96%, and BT.2020 around 71%. That doesn’t mean the colors on the LG B6 are weak. In most movies and series they look lively, well saturated and simply pleasing to the eye. You only notice a difference in very bright, highly colorful scenes. Then colors lose some intensity compared with QD-OLED panels. This comes from the WOLED panel construction. Besides red, green and blue subpixels it also uses a white subpixel that helps boost brightness. It comes at a cost: at very high luminance some color is effectively “diluted” by the white light, so saturation of some colors can be slightly lower. In everyday use this isn’t a big issue, but you can notice it in the most demanding scenes.

We conduct all our tests in the best picture mode on each TV. In this case, as usual, it is the Filmmaker mode. The name of the mode suggests perfect colour reproduction; however, there were noticeable deviations from the correct image. Our unit, in terms of white balance, showed a significant drop in shades of blue - both in SDR and 4K HDR material - which caused a clear yellowing of the image, noticeable in comparison scenes from the film with Tom Cruise. As we described earlier, QNED91T has some tendencies to brighten the screen. This is confirmed by the gamma, which is significantly lower than the reference value of 2.4. On the other hand, the EOTF curve, responsible for brightness in 4K content, showed some issues with the TV dimming the image in the darkest areas, which we could observe in the paragraph describing HDR effect quality. Although the Filmmaker mode is quite a decent "out of the box" mode, it still requires some adjustments.

We tested the LG B6 in Filmmaker Mode, which is the best picture setting available right out of the box. ISF modes deliver very similar results, but in our tests we always stick to Filmmaker Mode for better comparison with other TVs. Each of those modes is, after all, a much better starting point than Vivid or Eco mode, where the picture is heavily boosted and noticeably less natural. With SDR content, the factory settings perform really well. Color errors are small, gamma behaves properly, and the image looks natural during ordinary viewing and does not seem overly "pumped up." It's a bit worse with HDR. When you play that kind of content you can quickly see that the white balance hasn't been set perfectly. Too much blue and red causes the image to shift toward a slightly pink tint. This is also confirmed by measurements of the color gamut and the ColorChecker, where samples clearly drift in that direction. It's not a flaw that completely ruins the picture, but you can notice it in HDR films. So people who care about the most faithful image should consider the calibration we describe later in the review.

LG offers advanced calibration tools in its televisions such as 65QNED91T6A, which we took advantage of. When it comes to white balance, we were able to significantly correct it in SDR content. The picture mode in 4K HDR quality posed greater challenges, which, although still not perfect, looks better than before calibration. The errors on the Color Checker palette and the colour palette are much smaller than in factory settings. Regarding brightness characteristics, gamma for HD content is practically ideal, with a slight exception at the end of the graph. However, the biggest issues the television had were with brightness in 4K HDR content. Analyzing the EOTF characteristics in films, we noticed that the television manipulates brightness quite significantly, which we observed in earlier tests. Brightness is considerably boosted compared to the graph in the static test, and the television brightens certain scenes to the extent that some smaller elements lose detail. Unfortunately, this is caused by an average local dimming algorithm in this model. Nevertheless, calibration yields decent results, especially in terms of precise colour reproduction.

During calibration we focused primarily on HDR content, because that's where the factory settings required the biggest corrections. We didn't neglect SDR mode, though, which after adjustment was brought almost to perfection. Colors are very accurate and brightness is handled as it should be. The biggest improvement in HDR came from correcting the white balance. After removing the excess red and blue, the pinkish tint disappeared and the image became much more natural. Skin tones, whites and all colors that had been shifting toward magenta improved. After calibration most errors fell below a Delta E of 2–3, the threshold at which the average viewer stops noticing differences with the naked eye. The LG B6 can therefore deliver a very accurate image, especially for the manufacturer's entry-level OLED model.

When it comes to tonal transitions in lower quality materials, the TV offers the already-known feature from LG TVs - "Smooth Gradation." We can control it at three levels: low, medium, and high. We recommend using the medium option, as it effectively removes tonal transitions without causing noticeable issues with removing the structure of objects or other artefacts.

As for image scaling (upscaling), LG's Alpha processor handles this well. The image appears very plastic, with slight jaggedness in some elements, which does not significantly affect the quality. It looks really okay, and the overall effect is very satisfactory.

The LG B6 handles lower-quality sources very well. Much of the credit goes to effective digital image processing, which can mask some source imperfections without overly smoothing the whole scene. The feature "Smooth Gradation" proves particularly useful. It can significantly reduce posterization, which we mentioned earlier, especially in darker areas of the image. The safest choice remains Low or Medium. The function still effectively smooths harsh tonal transitions, but does not yet interfere too much with fine details. The most dedicated purists can, of course, leave it off. Upscaling to 4K also performs very well. Full HD and 720p content retain a good amount of detail, and the image is neither overly sharpened nor excessively blurred. Some limitations become noticeable only with very poor sources below 720p, where the smallest subtitles and fine elements are not always perfectly sharp, but this is true for almost every other TV on the market.

The television has a refresh rate of 120 Hz, which should satisfy most users in terms of motion smoothness. Additionally, QNED91T is equipped with the TruMotion feature, which allows for smoother image display in movies. As part of this feature, we can adjust the "De-Judder" and "De-Blur" sliders. The "De-Judder" slider is responsible for reducing jitter in movies, which is particularly useful when playing content with a lower frame rate, while "De-Blur" helps reduce blurriness in fast scenes, which is essential for sports or dynamic shots.

One of the biggest advantages of OLED panels is their very fast pixel response time. This keeps the image sharp and prevents the visible smearing that often appears on LCD TVs. However, there is a downside. During slow camera pans, motion can look more choppy than on LCD screens, where the slower panel naturally masks some of that effect. Fortunately, on the LG B6 you can easily soften this with TruMotion. With the motion smoothing properly adjusted, you can achieve smoother motion without giving the picture an excessive soap-opera effect.

The LG 65QNED91T6A television is equipped with HDMI 2.1 ports with a full bandwidth of 48 Gb/s, providing full support for all standards needed for gaming on modern consoles. We can count on support for variable refresh rate (VRR) and auto low latency mode (ALLM). This ensures smooth gameplay without delays.

With support for all popular HDR standards in games, such as HGiG and Dolby Vision, we can fully harness the potential of the PS5 and XBOX One consoles. The television also easily handles lower resolutions than 4K, so even older consoles look good on it. The Game Bar makes it easy to access gaming-related settings, allowing us to quickly and intuitively adjust picture parameters and features for gamers. Additionally, the QNED91T offers NVIDIA GeForce Now functionality, enabling us to game in the cloud without needing a console. However, it should be noted that this solution is quite expensive and somewhat falls short compared to Xbox Game Pass, which is available only on Samsung TVs.

QNED91T LG is a great choice for less experienced and more advanced gamers looking for a versatile television for gaming.

LG OLED B6 offers a powerful set of advantages for gamers; it's simply a complete platform for PS5, Xbox Series X/S, or a solid PC. It has four full-size HDMI 2.1 ports with 48 Gbps bandwidth, so you can skip the annoying cable swapping when you want to connect several newer devices at once. We get the full suite of sync technologies – from classic VRR to G-Sync and FreeSync. The screen seamlessly matches the refresh rate to the frame output produced by the console or graphics card. Of course ALLM is included: the B6 automatically detects a running game and immediately cuts input lag to a minimum. HDR handling is also excellent. The TV supports Dolby Vision, and a properly implemented HGiG standard means that after an initial calibration in the console settings the picture won’t suffer from blown-out highlights or lost detail in bright areas. The cherry on top is the Game Bar. Instead of digging through the full menu during gameplay, one click lets you adjust shadow visibility, tweak selected settings, or simply check the display’s current operating mode. All of this makes the LG B6 a great choice for gamers.