Sharp GR8 vs Philips OLED811

Sharp GR8 in its promotional materials boasts of "very high brightness" at a level of 500 nits. Unfortunately, our tests showed that the reality is somewhat different – the average luminance value we managed to achieve was around 360 nits. This is rather an average result, especially in the context of the manufacturer's claims. Such brightness does not allow for a full enjoyment of HDR effects. The image is a bit more defined than in standard SDR, but it is difficult to speak of true richness and depth in bright elements here. However, praise is due for the DCI-P3 colour gamut coverage at a level of 95%. This is a result of the application of an additional PFS layer, known from QLED technology. As a result, the colours are vivid and have a pleasant, natural tone, which somewhat compensates for the deficiencies in brightness.

Philips OLED811 uses a new generation of WOLED EX panels, also found in models such as the LG C6 and Samsung S90H. After calibration we measured around 1500 nits, which is a very good result for an OLED TV. You can see this clearly in films and series. All kinds of bright flashes have the right intensity, especially when they appear against a dark background. In such scenes the OLED811 can deliver truly impressive HDR. Of course, that does not mean you will see that level of brightness in every shot. When the screen is filled with a large amount of white or a wide explosion, brightness falls to around 600 nits. That is still a good result, but those scenes no longer have the same punch as small, bright elements on a dark background. This is a known limitation of OLEDs and the OLED811 is no exception.

Colours

Aside from HDR brightness, colours also matter and here Philips performs very well. It covers almost the entire DCI-P3 gamut, which contains most of the colours used in HDR films and series. You get saturated reds and lush greens, and when watching it’s hard to find major faults in that respect. It looks a little worse with the much wider BT.2020 gamut, whose most saturated shades are already out of reach for this panel. There is also the issue of the white subpixel that the WOLED panel uses to boost brightness. With very bright colours you can see a certain washout: the colour is bright but loses some of its intensity. It is precisely in such situations that QD-OLED panels from Samsung Display have the advantage. However, in most films and series this is not something that will immediately stand out.

At the outset, it is worth noting that colour reproduction tests are always conducted in the best factory picture mode. In the case of Sharp GR8, this is the “Film” mode. As for white balance, which affects how we perceive colours on the screen, in SDR mode, there is an immediate noticeable dominance of blue. This results in an unnatural cooling of the image – blue elements take on a purple hue, and skin tones acquire a pinkish glow, as we can see in the comparative photo from the film STAR WARS. During the Color Checker test, it was clear that the colour samples deviated from the reference values, confirming considerable errors in colour reproduction. The gamma was also not ideal – it caused excessive brightness throughout the entire image, resulting in a lack of depth and appropriate tonal transitions in the scene.

In 4K HDR mode, the situation looks significantly better. The dominance of blue is much less noticeable, although there are minor issues with the combination of red and blue. This causes some shades to appear somewhat unnatural. The EOTF curve, responsible for the brightness of the image in 4K HDR content, revealed another problem – the television tends to excessively dim the image across the entire surface of the screen.

In summary, the “Film” mode in Sharp GR8 would require a few adjustments to fully utilise the potential of this television. Fortunately, we took care of that and proceeded with calibration.

Film mode on the Philips OLED811 is sensibly set up straight out of the box. Most colour errors remain small, both in SDR and HDR, so you can sit down to watch without adjusting the settings first. There are no major inaccuracies that would immediately distract from the film. It falls a little short of perfection, though. The white balance shows a slight lack of red compared with green, so whites and greys can have a faint greenish tint. It is not a strong colour cast, but measurements clearly show it. There are also minor brightness deviations in SDR: some parts of the image are slightly brightened, and the darkest shades are not always reproduced evenly. In HDR the TV sticks much closer to the reference, although in places it gently lifts detail from the shadows. These are generally areas that could be improved. The factory film mode provides a good starting point, and calibration will reveal how much more can be gained from it.

Sharp GR8 is one of those televisions that truly gains a second life after proper calibration. Both in HD and 4K content, the white balance performs very well, especially when considering the price segment of this model. The image becomes much more aligned with what the director intended to show – colours look natural, and skin tones acquire the appropriate depth and warmth. The brightness characteristics also make a very positive impression. Both gamma and the EOTF curve display really solid values. While minor imperfections can be noticed, they are subtle enough that they are difficult to detect during everyday viewing. In summary, calibration allows the Sharp GR8 to showcase its best features, offering an image that is not only pleasant to the eye but also faithfully reflects the creators' intentions.

After calibration the Philips OLED811 produces an image very close to the reference. We managed to correct the white balance and eliminate the slight tint visible in the factory settings. Errors in the Color Checker measurements for SDR and HDR fell to around 1 to 2, and many samples are even below 1. That's a level at which differences from the reference image are hard to spot with the naked eye. We also improved the gamma, and only in the brightest whites is there a slight brightening remaining. In HDR the EOTF curve also tracks the reference closely, although the TV still tends to gently boost the brightness of small elements, such as stars or on-screen text. This gives the picture a little extra sparkle that shouldn't be there, but otherwise there's little to fault. It was already good out of the box, and after calibration we managed to refine most of the remaining shortcomings.

Sharp GR8 has been equipped with the "10-bit colour reproduction" feature, which theoretically should improve the smoothness of tonal transitions. In practice… well, the effect is surprising, but not in a particularly positive way. Even at the highest settings, it is difficult to notice any impact on the actual tonal transitions. Instead, the feature surprisingly smooths out what it shouldn't – walls, shirts, or other flat surfaces look almost like they have been freshly ironed. In the test, we had to note that there is simply no actual impact on tonal transitions.

As for image scaling, here Sharp GR8 performs significantly better. The television can give the image a plastic, smooth characteristic, meaning even lower resolution content looks quite good. Of course, with more demanding details, such as thin tree branches in the background, one can notice slight jaggedness, but it is not something that would significantly affect viewing comfort.

OLED811 handles lower-quality material reasonably well, though it falls well short of perfection. The "Banding reduction" function helps to smooth tonal transitions and on the low setting gives a fairly good result. It does not remove bands between shades as effectively as similar solutions from some competitors, but at least it does not introduce new artefacts in the process. This is a sensible setting for everyday viewing. There is still some dissatisfaction, however, because the MediaTek Pentonic 800 chipset used here can, in other manufacturers' implementations, cope with the effects of heavy compression more effectively even at similarly low settings. Much therefore depends on how a given manufacturer makes use of its capabilities. We have a few more comments about the upscaling to 4K. There is a lot of detail, but the overall image looks rather soft. Edges are heavily smoothed, which robs the picture of a bit of sharpness and clarity. This can be partly corrected with the sharpness slider in the menu, though that will merely accentuate outlines rather than recover detail. On the plus side, there is no overscan; even with an SD signal the TV does not crop the edges of the picture.

This is where Sharp GR8 has the chance to stand out from the competition in its price segment. The television is equipped with a 144 Hz refresh rate panel, which is an impressive achievement, especially if we plan to use it for dynamic content such as action films, sports broadcasts, or video games. Additionally, the manufacturer has ensured the presence of motion smoothing technology, commonly referred to as a “smoothness enhancer.” The user has three levels of adjustment at their disposal, allowing them to tailor the effect to their own preferences – from subtle smoothing to a more aggressive intervention in the smoothness of the image. This is a nice addition, particularly for those who mainly watch films and care about smooth, cinematic sequences without irritating stutters or frame drops.

In terms of motion handling the OLED811 performs excellently. At 120 Hz, which is useful for console gaming and watching sport, the picture stays clear and moving objects do not leave noticeable smears. The fast response of OLED pixels helps here; this is clear in the UFO test, even on dark backgrounds. There are also motion smoothing controls. For films you can adjust the level of smoothing to suit your taste, ranging from preserving a cinematic character to much smoother motion. A separate blur reduction setting is useful for fast-paced material such as sports broadcasts.

If the television has a 144 Hz panel and two full HDMI 2.1 ports, it is clear that it has been designed with gamers in mind. The Sharp GR8 offers exactly that – high refresh rates and the appropriate connections that will allow you to get the most out of modern consoles and PCs. It also features ALLM, which automatically switches the television to low latency mode, and VRR, which ensures the image does not stutter even during more demanding moments. In practice, everything works as it should, and it is hard to find fault with anything. However, there are some shortcomings. It lacks support for HGiG, which is a feature that better adjusts HDR for games, as well as Game Bar, which makes it easier to quickly adjust settings without leaving the game. Despite these drawbacks, the Sharp GR8 is truly a solid option for gamers.

OLED811 has almost everything you could expect from a TV for gaming. It supports 120 Hz at Full HD, 1440p and 4K, and when connected to a PC it can reach 165 Hz. It also has VRR, which helps prevent screen tearing when frame rates fluctuate, and ALLM, which automatically switches to game mode. So you don't have to dig into the settings every time you power up your console.

Another plus is that HGiG works correctly, so once HDR is set on the console the TV doesn't apply its own changes to image brightness. There's also a Game Bar to check signal parameters and quickly change settings useful while gaming. The list even includes Dolby Vision for gaming, but there is a significant catch, which you can read about below.