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 (rather than at the edges), which gives it a solid advantage right 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 particularly impressive, but as it turned out, sufficient to achieve quite decent results.
In tests based on scenes from films such as Oblivion and The Meg, the QN80F performed well – blacks were deep, and the overall image consistency was visually appealing. 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 becomes evident – bright elements could bleed into one another, and some details in the dark areas lost visibility. In one scene featuring a helicopter (The Meg), we even noticed slight brightness flickering, as if the television was trying its best to maintain detail visibility at the expense of black depth.
However, these issues are not exclusive to this model – halo effects or drops in contrast during very complex scenes are challenges faced by most Mini LED televisions, even the more expensive ones. In its class, the QN80F performs positively and offers significantly better contrast than the QN70F model with edge backlighting. For most users, this will be a level more than sufficient – although not perfect.
When it comes to the most important aspects of Mini-LEDs, namely contrast and black levels, the Sharp JP7 in the tested 55-inch size uses a VA panel. Combined with backlighting divided into 160 zones (in a 10x16 arrangement), this promises truly solid performance. Measurements on static film screens can be quite shocking, with the measured contrast reaching five-digit values, even hitting levels of up to 50,000:1. On paper, this is a result that would not be out of place for much more expensive models, and black levels under such conditions look very attractive.
Unfortunately, a television is purchased for watching films rather than admiring static screens, and here the magic somewhat fades. When something more begins to happen on the screen – especially in complicated, dark scenes with a lot of small bright elements – the backlighting system in the JP7 starts to literally go haywire. The zones can "dance" before the viewer's eyes, turning on and off in a way that can be simply irritating and distracting from the action. It is evident that Sharp has significant room for improvement in terms of managing local dimming. The hardware potential in the form of Mini-LEDs is large, but the controlling algorithms clearly struggle to tame them.