The colour reproduction test in Sharp FQ8 was conducted in film mode, which out of the box offers the best visual capabilities, providing viewers with a colour experience closest to reality. Nevertheless, it cannot be described as exceptional, as there are still some shortcomings that affect the overall picture quality. Colour reproduction in Sharp FQ8 for HD content demonstrates significant issues with white balance. On the graph, the red line clearly rises, indicating excessive dominance of the red colour. This is also confirmed by tests using colour samples, which show that many colours deviate towards red. For example, in a scene from a film featuring a child, the image is very warm and unnaturally red. Similar difficulties occur with 4K HDR content, where there is also noticeable excessive presence of the red colour. It is worth noting this, especially for those who value faithful colour reproduction.
Regarding contrast for SDR, at the beginning of the gamma graph there is a strange characteristic, suggesting issues with reproduction. Subsequently, the entire line is below the reference line, indicating that the television does not achieve appropriate brightness and contrast values in standard content. Meanwhile, the EOTF curve for 4K HDR shows significant discrepancies. Such fluctuations indicate difficulties in maintaining consistent brightness reproduction, leading to unpleasant visual effects when viewing HDR content.
Xiaomi, like many manufacturers, offers a wide range of picture modes. On the S MiniLED, we can find both IMAX Enhanced and Filmmaker. Our tests were conducted in Filmmaker mode, which theoretically aims to reflect a reference image, but the reality turned out to be somewhat different.
Let's start with the test of SDR content. Here, the television had quite a few issues, especially with white balance. The clearly visible dominance of red made the image look too warm, with all colours taking on a reddish hue. This was particularly noticeable in a comparative scene from the film Star Wars. The brightness characteristics (gamma) also left much to be desired – instead of a smooth transition, we had a real "rollercoaster," with a visible excessive brightening of the screen.
In 4K content, the situation improved significantly. The white balance, although still not perfect, was much more balanced, with a slight dominance of red and blue, but without excessive impact on the overall perception. The EOTF curve (responsible for brightness in HDR) showed some brightening in the brightest parts of the image, which was noticeable, for example, in the test scene from the film Pan that we described earlier. These brightening effects may disturb the precision of the image, but in 4K, the overall effect was much more acceptable than in SDR.
Although Xiaomi S MiniLED can pleasantly surprise with 4K content, its factory settings in SDR require solid adjustments, especially regarding white balance and brightness. This is definitely a television that would benefit from calibration.