With a non-FALD monitor, edge-lit or otherwise, the black level is static; if you have the screen set to 80% brightness, for instance, a full black screen could be, say, 0.2 nits, and if you have it calibrated to a lower max brightness, the same black screen may have a static black level of 0.1 nits (for references, OLED panels have a true 0 nits black level, and the best plasma displays had somewhere around 0.003 nits). In this scenario, with mixed content, anything that is mastered for black will have that minimum nits level, regardless of what else is on screen, bright or dark.darzo wrote:I've already read the Dell monitor review. It's understandable but conveyed little to me in practice. Likewise I find those images virtually nonsensical.They remind me of Amazon reviews about how basically monitors emit light. Black screens with light all over them. See the same thing when I turn off my computer, make no connection to what appears on the screen when something is actually there because it's so different and normal looking.
I.e. is blooming actually something to be concerned about, something that would stand out and bother someone?
With a FALD display, now you have the native black level of the panel based on the current max brightness of the display, plus the localized, selective dimming that allows lower than native black levels by not shining the backlight through specific parts of the LCD. Problem is, since the number of LEDs and the number of pixels in the LCD will never match up 1:1, the LED zones will always be larger than individual pixels, which means the more black on the screen and the less white on the screen, the more the active LED zones will bleed over into non-active zones to illuminate the bright object(s), partially revealing the panel's native black level and resulting in a visible contrast between the two, which is what we refer to as "blooming artifacts."
The level of blooming is dependent on the native contrast ratio of the given display, the amount of zones, the range between bright and dark in the given content, and the effectiveness of the dimming calculations.
So with a typical, well calibrated IPS panel equipped with an effective FALD system, quite simply put, due to the variances in tolerance, taste, and perspective from person to person, there isn't a one-size-fits-all answer on if they will "bother someone." The severity of the blooming artifacts are subjective; some will find them acceptable, some will find them unacceptable.
Since you can't seem to believe images depicting the artifact, you're best off seeing a FALD monitor in person before making a final decision on one when they're ultimately made available.