QN80F is a representative of the Neo QLED series, meaning it is a television with Mini LED backlighting. Unlike its cheaper cousin, the QN70F model, the diodes here are placed directly behind the panel (instead of at the edges), which gives a solid advantage from the start when it comes to contrast control. In the 65-inch variant we tested, we counted 88 dimming zones – a result that may not be very impressive, but as it turned out, sufficient to achieve quite decent results.
In tests based on scenes from films such as Oblivion or The Meg, the QN80F performed well – blacks were deep, and the overall image consistency was eye-catching. However, in more demanding moments (e.g., scenes with a large number of bright details on a dark background), a halo effect appeared. This is where the limitation of the number of zones comes into play – bright elements could bleed around, and some details in dark areas became less visible. In one scene with a helicopter (The Meg), we even noticed slight brightness flickering, as if the television was trying its best to maintain visibility of the details at the expense of black depth.
However, these are not issues exclusive to this model – the halo effect or contrast drops in very complex scenes are something that most Mini LED televisions struggle with, even the more expensive ones. In its class, the QN80F still performs positively and offers noticeably better contrast than the QN70F model with edge lighting. For most users, this will be a level more than sufficient – although not perfect.
If you 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 movie scenes, the contrast can reach values well over six digits, and sometimes even seven digits, which can be confidently regarded as results almost infinite. And indeed – in typical cinematic shots, the effect closely resembles that known from OLED televisions. Samsung deserves commendation 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) – it has managed to refine 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 don’t have perfectly separated bright objects from black, and we can’t speak of a lack of halo effects (subtle glows around small bright objects) known from MINI-LED televisions, so QN90F still doesn’t win against OLEDs. But it is definitely approaching them in a more mature and refined way than the year before.