Sharp GP6765 vs LG MRGB85B

In movie mode, the television Sharp GP6765 reaches a brightness level of 300 nits; unfortunately, this is quite an average result. Such brightness is closer to the standard SDR image than what full HDR experience should offer. As a result, the television is unable to convey the full depth and dynamism of the picture that one might expect from a good HDR mode. Visual effects that in other models are vivid and detailed may appear muted here, and high-contrast scenes won’t look as impressive. However, it's worth noting that when comparing this result with televisions in this budget, it is a decent score. A positive feature is the fact that the television supports a wide colour gamut of DCI-P3 at 92.5% thanks to the implementation of quantum dots (Quantum Dot/QLED). This is quite a respectable result, especially in this price range. As a result, colours are vibrant and more saturated, which certainly impacts the image quality, although it doesn't fully save the HDR experience due to the limited brightness.

LG MRGB85 offers moderate brightness. On test patterns it reaches around 700 nits, which is a decent result in itself. In real movie scenes, however, values are lower and most often fall in the 400 to 600 nits range. Bright, wide shots look best. In scenes with large areas of black the TV noticeably reduces luminance, attempting to keep contrast as high as possible. The HDR effect is therefore visible, but it is far from the level offered by more advanced Mini-LED designs. Particularly in darker parts of films, the limitations of the edge-lit backlight and imprecise local dimming become apparent again.

HDR colours

A much stronger suit of the MRGB85 is its colour. The TV covers around 95% of the DCI-P3 colour space and 74% of BT.2020, so HDR content can look vivid and impressive. Colours are well saturated, and the difference compared with basic LCD TVs is clearly noticeable. It is worth noting, however, that this is not a classic RGB backlight, where each of the three primary colours is generated by a separate diode. Red is produced by a PFS phosphor, which expands the palette and achieves more saturated red tones. This solution performs well for colour reproduction, but it does not change the limitations of the local dimming. The diodes are not driven independently in the way the series name might suggest... so it turns out that Mini RGB is not the same as Mini-LED RGB!

Sharp GP6765 was launched in movie mode, which is the best setting for colour reproduction. Unfortunately, even so, the quality is still far from ideal. Starting with the white balance, in SDR mode the graph shows significant increases in the red colour. This effect can make the image appear slightly yellowish, leading to distortion of natural skin tones. As a result, viewers may notice that some scenes seem unnatural, and colours lose their authenticity. In HDR mode, the situation changes dramatically – the dominant colour becomes blue. Such a strong shift towards blue also negatively impacts the colour balance of the image, which can lead to a loss of detail in cool tones. Viewers may feel that the image is somewhat cold and out of balance, which is further highlighted by the fact that the television does not achieve optimal colour reproduction. Tests conducted using the Colour Checker tool confirm these shifts in several tested samples.

When it comes to contrast, in HD mode the range shows a significant jump at the beginning of the graph, but then remains close to the reference line at 2.4. This means that in most scenes, the television is able to deliver a satisfactory level of contrast. For the viewer, this means better perception of details in shadows and greater depth of the image, which affects their overall viewing experience of movies and TV shows. In HDR mode, however, the EOTF curve shows large fluctuations both at the beginning and at the end of the graph. Such fluctuations can lead to inconsistencies in detail reproduction in bright and dark areas of the image. For the viewer, this means that in scenes with intense light, such as explosions or dynamic actions, essential details may disappear and the image may appear blurry. Conversely, in darker parts of the image, the lack of clear differences in shades can cause details to blend into a uniform patch, which significantly reduces the viewing quality. Although movie mode offers the best factory settings in the GP6765, both in the context of colour reproduction and contrast, significant problems do exist.

We tested the TV in Filmmaker Mode because, of the available presets, it produced the image closest to reference. The out-of-the-box colour reproduction wasn’t perfect, though. The biggest deviations were in the white balance, with too much red and not enough blue in the image, so the overall picture shifted noticeably towards warmer tones. Whites took on a slightly yellowish tint, and skin tones and bright areas didn’t always look natural. It wasn’t a fault that ruined the viewing experience, but in a direct comparison with the same panel after calibration the difference was clearly visible.

After calibration, in movie mode, the white balance on the Sharp GP6765 TV for SDR content improves significantly. All the lines on the graph come closer to the reference line. Although they are not perfectly straight, the achieved results are satisfying, considering the price range of this model. Such an improvement in white balance translates into a more natural and accurate colour reproduction, positively affecting the overall visual experience and immersion in the films being watched. Regarding the colour gamut, the initial jump on the graph was not removed, however after this error, the rest of the lines represent the expected effect much better, making the image more coherent and pleasant to view.

In the case of HDR content, the white balance performs slightly worse compared to SDR content, but it is still significantly better than before calibration. The improvement in white balance in HDR contributes to greater colour consistency, making watching films more enjoyable, despite some shortcomings that may occur. Speaking of contrast, it is difficult to claim significant improvement. Our specialists noted that the lack of control over dynamic tone mapping settings prevented achieving significant improvement in EOTF, leading to uneven brightness reproduction.

Despite some shortcomings related to the lack of settings options for dynamic tone mapping, the Sharp GP6765 TV has gained a new face after proper calibration. The improved white balance and better colour reproduction in SDR mode have made the image more natural and pleasant to the eye. Although there are still areas that require improvement, especially in HDR content, the TV offers satisfying visual experiences, making it an interesting choice in its price range.

Calibration primarily corrected the white balance and removed the previously noticeable warm cast. After the correction, whites no longer had a yellow tint and colours became more neutral and natural. The biggest improvement was seen in SDR material, where the picture looked even and much closer to the reference. A similar effect was achieved in HDR. After calibration the image became more controlled, although not all of the TV’s limitations could be eliminated. The main issue remained intense reds, which were not always reproduced with sufficient precision. In practice the MRGB85 handles everyday SDR content very well, but in more demanding HDR material its limitations are still clearly visible.

On the Sharp GP6765 television, the “10-bit colour reproduction” feature performs well in the tested scene with light bulbs. Setting this option to “medium” yields satisfactory results, as there are no issues with grain smoothing or blurring of key image elements. The “low” setting also delivers positive results, providing a clear image without adversely affecting details. Such smoothing options for tonal transitions contribute to enhanced visual quality, allowing for more natural colour transitions.

In terms of image scaling, the Sharp GP6765 television has its strengths, such as the absence of overscan when displaying test material. This allows viewers to enjoy a full image without losing any details from the edges. However, in the tested scene with the model, some shortcomings arise. The branches or trousers do not look their best. Their outlines appear slightly jagged, suggesting that effective edge smoothing techniques were not applied. This can make some details look somewhat distorted, which may affect the overall visual experience.

Upscaling and digital image processing perform quite well in the LG MRGB85. The Alpha 8 AI 4K Gen7 processor efficiently upscales lower-resolution material, and you can easily turn off overscan regardless of the source. The TV also handles compression artefacts well. The "Smooth Gradation" function can effectively reduce visible banding and tonal unevenness, but it isn't always precise. At higher settings it can also smooth out fine details, such as the texture of materials. A plus is that it doesn't remove film grain. The safest option is the "Low" or "Medium" setting, which offers the best compromise between artefact reduction and preserving detail.

When it comes to blur and motion fluidity, the Sharp GP6765 television performs quite averagely. It is equipped with a 60 Hz panel, which works well for films. The TV features a motion smoothing function called "Motion Enhancement". With this feature, we can control the fluidity of the motion, allowing us to choose whether the image should appear in a cinematic frame or be more fluid - theatrical. This smoothening function should satisfy most users who focus on film content. However, in the case of sports or games, the Sharp does not perform at its best. In the tested scene with the UFO alien, there is noticeable blurriness, suggesting that the low response time of the panel negatively affects the sharpness of moving objects. Such effects can be particularly frustrating during dynamic sequences where fast movements are common. For those who prefer watching sports or intense video games, the limitations in motion fluidity may be discouraging, making the Sharp GP6765 not necessarily the ideal choice in this category.

The LG MRGB85 is fitted with a VA panel with a native 144 Hz refresh rate, so its motion handling is very good. The TV easily handles 120 Hz content from consoles and higher refresh rates when connected to a PC. That matters not only for gaming but also when watching sport, where camera motion is noticeably smoother than on basic 60 Hz panels. There’s also the TruMotion system, which lets you set the level of motion smoothing yourself. You can keep a more cinematic motion or increase smoothness, which works well for live sports and TV programmes. The adjustment range is wide, so you can easily tailor the motion smoothing to your own preferences.

The functionality of Sharp's GP6765 for gamers leaves a lot to be desired. Although this model is equipped with HDMI 2.1 ports, which theoretically should offer a range of modern conveniences, in practice the situation is much worse. The only feature that truly utilises the capabilities of this standard is Auto Low Latency Mode (ALLM). Unfortunately, the lack of support for key features such as Variable Refresh Rate (VRR) or HDR Gaming Interest Group (HGIG) makes this TV a less appealing choice for gamers. VRR is essential for eliminating issues with tearing and stuttering, which is particularly important in dynamic games where smoothness of image is crucial. Meanwhile, HGIG allows for optimal HDR reproduction, increasing immersion and visual quality. Although it might seem that the implementation of Dolby Vision will bring significant benefits, for gamers it is completely useless due to the very high input lag in this mode.

One could say that the presence of HDMI 2.1 ports in Sharp GP6765 is a marketing trap that can mislead users into thinking that the HDMI standard automatically entails all its conveniences. Expecting full functionality that should accompany HDMI 2.1 may lead to disappointment.

When it comes to gaming, the LG MRGB85 performs by far the best. The manufacturer hasn’t skimped on the kit and has essentially carried over the full suite of features from pricier TVs into this model. You get three HDMI 2.1 ports with full 48 Gb/s bandwidth. Each supports 4K 120 Hz from a console, and when connected to a PC also 4K 144 Hz. So you don’t need to worry which port to plug your console or PC into, as they all offer the same set of capabilities.

On board you’ll also find VRR, AMD FreeSync Premium, NVIDIA G-Sync Compatible, ALLM and HGiG. Dolby Vision Gaming is included too, allowing supported games to use high refresh rates and dynamic HDR simultaneously on Xbox. Rounding it off is Game Optimizer, a handy in-game menu. Without leaving the game you can change the picture profile, brighten shadow detail or check the current frame rate. In terms of gaming features, the MRGB85 therefore offers almost the same as significantly more expensive LG models.