|
|
It's not the greatest of photos and you don't provide any description but it it's appearing on different parts of the screen around light objects then that's haloing rather than bleeding.
It's a similar effect but while bleeding is a fault, haloing isn't.
HDR calls for more contrast, in order to display bright highlights without increasing the brightness of the rest of the picture.
There hasn't been any breakthrough in LCD contrast levels so the only way this can be achieved is by controlling the backlight in sections, called local dimming. The size of those zones will get smaller over time but right now they're fairly large. I believe the 65" XF90 has 40 of them across the screen, and it's competitors have fewer.
So in situations like your photo where very small areas of white on black are called for, maximum contrast in a very small area, the TV has to choose a backlight level for that zone which retains as much of the requested brightness level for the white as possible without brightening the black too much.
There's often a control for this local dimming feature allowing you to adjust this balance. I believe they're called Auto Local Dimming and X-tended Dynamic Range on the XF90
Sony X900F Calibration Settings
Local dimming is also used to boost contrast in SDR pictures which is why you're seeing it on non-HDR stuff too. |
|
1-12-2019 22:32:35