Originally Posted by qoopy
HDR blooming issue
Is it that bad?
I'm not going to click on that (because, ugh, even before reading what people are saying about him), but I can tell you from my own experience with a Vizio 2018 PQ set that it can
be that bad, if
you don't calibrate it correctly.
The real key, at least with the 2018, is to keep the FALD settings on Low (well, and obviously calibrate it correctly in more general). No blooming whatsoever. It's still plenty of extra local lighting for bright areas, and it still locally dims full black in HDR to... black.
Medium is an acceptable compromise, but you will see some blooming in relation to white text against black backgrounds. I've NEVER noticed blooming on Medium *in* an actually natural video scene, only with things like text on flat black backgrounds, or with some bloom into the letterboxing "black bars" on things with a wider aspect ratio than 16:9.
Personally I just always run it on Low. I don't feel like the FALD needs to be any stronger than that, the highlights are plenty impressive on Low, but we also watch in a fairly dark room with no direct sunlight. So long as you don't get caught up in the fact that it's called "Low" I can't imagine anyone being unhappy with it set to that. Maybe in a brightly lit room the Medium would help.
The 2019 Ps may be different in this regard, I know there have been some reviews saying that the FALD algorithm has been tweaked to further reduce bloom. One thing to keep in mind is that, at least on the 2018, you have to go back in and set this for every type of video/input (so, it's different between SDR and HDR, and it also is different from HDR10 to Dolby Video... even on the same input source... and of course it's different between each input source, including apps vs external input).