If we compare the contrast results of this year's QN90F with last year's QN90D, it quickly becomes clear that the differences are minimal. In the best film scenes, the contrast can reach values well over six figures, and sometimes even seven figures, which can be confidently considered as results almost infinite. And indeed – in typical cinematic shots, the effect closely resembles that known from OLED televisions. Samsung deserves praise because, despite the relatively "modest" number of dimming zones – 504 in the 55-inch variant (modest compared to Chinese competitors like Hisense U8Q or TCL C8K/C9K) – they have managed to fine-tune the local dimming algorithms. This is particularly evident in the most challenging scenes, where compared to last year's model, the precision of dimming has nearly doubled. Of course, we still do not have perfectly separated bright objects from black, and one cannot speak of an absence of halo effects (slight glows around small bright objects) known from MINI-LED televisions, so with OLEDs, the QN90F still does not win. But it is definitely closing the gap in a more mature and refined way than the year before.
Let's get to the point, which is what is most important in the Mini LED panel: black levels and contrast. The Xiaomi S Pro 2026 is built on a VA matrix, which already promises deep blacks from the start. Adding to that is the Mini LED backlighting with a very large number of local dimming zones. In the 65-inch variant we tested, we counted as many as 532. This is a solid number that should provide precise control over the backlighting. It should be noted that this number is proportional to the size – by choosing the smaller 55-inch variant, there will be correspondingly fewer zones, and in larger models, more.
So, how does the black level perform on the S Pro 2026? The answer is complex.
Overall, it is really quite good, and we see a clear improvement compared to the problematic model from 2025. As you can see from our measurement charts, the results are sometimes spectacular. In most of the film scenes we measured in SDR (standard dynamic range), the contrast could be confidently described as very good and even comparable to designs three times as expensive. Well, it could be... and here we come to the paradox of this model. The issue is how the television manages the zones in scenarios other than SDR. As soon as we feed the television a higher-quality signal, such as an HDR series or Dolby Vision from streaming platforms (Netflix, HBO Max or Disney+), something strange happens. We have the undeniable impression that the television suddenly... forgets that it has been equipped with local dimming zones at all. As can be seen in our video below, the black levels in such scenes resemble more shades of dark grey or navy blue. Additionally, there is a subtle flickering of the entire screen. This is a level we would expect from televisions entirely devoid of a local dimming system. It seems that Xiaomi decided to fix one, but key, flaw of last year's 2025 model over the course of a year. And they succeeded – we no longer have the annoying "zone disco", the image is stable. It's just a shame that when consuming content of the highest quality (HDR), this entire advanced system becomes completely useless.