Sony X75WL vs LG MRGB85B

The luminosity chart for the X75WL Sony television showed a maximum value of 350 nits, which is unfortunately not an impressive result. The television does not surprise with its brightness, and all the HDR scenes we tested lacked depth and the appropriate light effect that should accompany HDR content. Additionally, the poor coverage of the DCI-P3 colour gamut makes it difficult for the television to reproduce rich colours, which significantly affects the overall viewing experience of HDR content. The lack of adequate brightness and weak colour coverage mean that HDR effects are very limited in this model.

LG MRGB85 offers moderate brightness. On test patterns it reaches about 700 nits, which by itself is a decent result. In actual movie scenes the values are lower and most often fall between 400 and 600 nits. Bright, expansive shots perform best. In scenes with a lot of black the TV noticeably limits luminance, trying to maintain the highest possible contrast. The HDR effect is therefore visible, but it is far from the level offered by more advanced Mini-LED designs. Especially in darker parts of films the limitations of edge-lit backlighting and imprecise local dimming become noticeable again.

HDR Colors

A much stronger suit of the MRGB85 is its colors. The TV covers about 95% of the DCI-P3 color space and 74% of BT.2020, allowing HDR material to look vivid and striking. Colors are well saturated, and the difference compared with basic LCD TVs is clearly visible. It is worth noting, however, that this is not a classic RGB backlight, where each of the three primary colors is generated by a separate diode. Red is produced by a PFS phosphor, which expands the palette and yields more saturated red shades. This solution works well for color reproduction, but it does not change the limitations of dimming itself. The LEDs 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!

Colour reproduction tests for the model Sony X75WL are carried out in movie mode, which offers the best image settings, but it also has its flaws. The biggest problem with the X75WL Sony is the white balance – for both HD and 4K HDR content – which is characterised by a dominance of blue. As a result, the entire image feels too cold. The colour checker confirms these errors, showing that the colours lean towards cooler tones. In terms of brightness characteristics, the contrast gamma is at a fairly decent level, however, the same cannot be said for the EOTF curve. There are significant issues with maintaining appropriate brightness – the image is either overly bright or too dim, which impacts the visual perception of content.

We tested the TV in Filmmaker Mode, because among the available settings it offered the image closest to the reference. However, the out-of-the-box colour reproduction was not perfect. The largest deviations concerned the white balance, with the image showing too much red and not enough blue, which caused the whole picture to shift noticeably towards warmer tones. Whites took on a slightly yellowish tint, and skin tones and bright parts of the image did not always look natural. It was not a fault that completely ruined the viewing experience, but in direct comparison with the same screen after calibration the difference was readily apparent.

X75WL Sony is one of those cases where image calibration may not be highly spectacular, but it offers a very good improvement in the perception of colours. The white balance, for both HD and 4K materials, has been significantly improved – there is no longer a strong dominance of cooler shades. The gamma curve also appears more stable, which translates into better image quality. However, the biggest issue remains the EOTF curve, which is responsible for brightness in 4K materials. Due to the technological limitations of the television (IPS panel and lack of local dimming technology), it is hard to speak of a significant improvement, as we cannot extract more from this model. Despite these limitations, the tonal quality of the image has been significantly enhanced.

Calibration primarily allowed us to correct the white balance and remove the previously noticeable warm tint. After adjustment the whites stopped leaning towards a yellow cast and the colours became more neutral and natural. The biggest improvement was seen in SDR material, where the picture looked even and much closer to reference. A similar effect was achieved in HDR. After calibration the image became more organised, although not all of the TV's limitations could be eliminated. The greatest reservations still concerned intense reds, which were not always reproduced with sufficient precision. In practice the MRGB85 handles everyday SDR content very well, whereas in more demanding HDR material its limitations remain clearly visible.

In the case of low-quality tonal transitions, the television Sony X75WL performs poorly. The lack of any feature to improve tonal transitions results in noticeable imperfections in colour gradation. However, one can credit the quite good digital processing – the image is displayed without overscan, and overall it looks relatively good thanks to the added slight sharpness, which some users may appreciate.

Upscaling and digital image processing perform quite well on the LG MRGB85. The Alpha 8 AI 4K Gen7 processor efficiently upscales lower-resolution content, and regardless of source you can also easily disable overscan. The TV also copes well with compression artefacts. The "Smooth Gradation" feature can effectively reduce visible banding and tonal unevenness, but it is not always precise. At higher settings it can also smooth out fine details, for example surface textures. On the plus side, it does not remove film grain. It's safest to use the "Low" or "Medium" setting, which gives the best compromise between artefact reduction and preserving detail.

The X75WL Sony television is equipped with a 60 Hz panel, making it more suitable for watching films than for dynamic gaming. This model features a motion smoothing function called Motionflow, which allows the user to adjust the picture on a 10-point scale. Smoothness is responsible for adding intermediate frames, thereby increasing the fluidity of motion, while the image becomes more theatrical, minimising the cutting effect. Clarity reduces motion blur, which is particularly useful in fast scenes such as sports or dynamic actions in films. With this feature, users can adjust the fluidity and sharpness of motion to their own preferences.

The LG MRGB85 is equipped with a VA panel with a native 144 Hz refresh rate, so it performs very well in terms of motion handling. 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 movement is noticeably smoother than on basic models with 60 Hz panels. We also have TruMotion, which lets you set the level of motion smoothing yourself. You can keep a more cinematic feel to motion or increase smoothness, which works well for sports broadcasts and TV programmes. The adjustment range is wide, so you can easily tailor the smoothing to your own preferences.

X75WL is not the best television for gamers. It only has the ALLM (Auto Low Latency Mode) feature and a basic Game Bar, which are not enough to satisfy more demanding users. In this price range, one could expect support for features like VRR or 120 Hz refresh rates - although in FULLHD, which are already standard - unfortunately, they are lacking here. This is a major downside for Sony, as the competition offers much more for gamers in a similar budget.

When it comes to gaming, the LG MRGB85 performs by far the best. The manufacturer didn't skimp on features and has essentially brought the full suite of functions from pricier TVs to this model. You get three HDMI 2.1 ports with the full 48 Gbit/s bandwidth. Each supports 4K at 120 Hz from a console, and when connected to a PC also 4K at 144 Hz. So you don't need to worry which port to plug your console or PC into, because they all offer the same capabilities. Also on board are VRR, AMD FreeSync Premium, NVIDIA G-Sync Compatible, ALLM and HGiG. There's also Dolby Vision Gaming, which means in supported games you can use high refresh rates and dynamic HDR simultaneously on Xbox. The package is rounded off by Game Optimizer, a handy in-game menu for gamers. Without leaving the game you can change the picture profile, brighten shadow details or check the current frame rate. In terms of gaming features, the MRGB85 therefore offers almost the same as much more expensive LG models.