SaberEdge wrote: ↑03 Apr 2021, 14:54
UNKKit wrote: ↑02 Apr 2021, 11:52
Do we know if the XG2431 is dimmer when using it's motion blur tech? That strobe utility screenshot is ridiculous. I'm going to return this BenQ now and buy the XG2431 instead if it isn't dimmed!
Well, I'm sure it will be dimmer, unless they're somehow driving the LED backlight harder during the strobing mode. Otherwise, it will always be dimmer, since your screen is essentially turned off for part of the time.
I understand that the strobing modes will generally lose a lot of brightness, I just wish they would still give us decent brightness in strobing mode. I mean, I think after I calibrated my BenQ XL2411P in the single strobe mode at 60Hz I only got something like 39 cd/m² and that's with the panel brightness turned all the way up.
If I could get near 100 cd/m² while using a duty cycle that gives around 75% blur reduction it would be awesome. I think I'm using a duty cycle setting of 08 on my XL2411P monitor.
If you're going to put a high quality strobing or BFI feature in your monitor--first of all, it's really appreciated--but just make sure you have enough brightness overhead to still give enough brightness in the strobing modes.
PureXP+ on XG2431 now lets you adjust strobe duty cycle in 1% increments from 1% to 40% of a refresh cycle under “PureXP+ Custom”. I can get significantly over 200 nits easily at 40%, so it does exceed 100 nits at 25% duty cycle, considering XG2431 supports humongous Vertical Totals (VT4500 was successfully tested at 60Hz) which gives enough time for relatively crosstalk-free 25% duty cycle at the lower refresh rates.
There is a light amount of voltage boosted strobing, not too excessive to burn out the LED’s, but exceeds 100 nits at 25% duty cycle.
PureXP+ Ultra = 10% duty cycle
PureXP+ Extreme = 20% duty cycle
PureXP+ Normal = 30% duty cycle
PureXP+ Light = 40% duty cycle
PureXP+ Custom = adjustable in 1% increments from 1% to 40% (via Strobe Utility)
It is always a brightness-vs-MPRT/persistence tradeoff for all strobed monitors, even DyAc gets dim if you adjust pulse width down (MPRT) in the BenQ variant of Strobe Utility. MPRTs can get as low as approx ~0.1ms albiet very dim, while MPRTs of 25% refresh cycle (4ms at 60Hz, 1ms at 240Hz) will be quite usable at triple digit nits. A 25% duty cycle requires the “Custom” setting, of course. The wide custom adjustable-MPRT range means you can strobe brighter (and slightly less clear), or strobe briefer dimmer (but clearer) — you choose the tradeoff.
A lot of old LightBoost fans -- from almost ten years ago -- used the LightBoost 10% feature (see
LightBoost 10% vs 50% vs 100%), but that was strobe length duty cycles only down to 1ms MPRT persistence, where the XG2431 can go all the way down to approximately one-tenth of persistence of LightBoost 10% if you wanted.
Also, this is a variable-scanrate panel (aka low-Hz friendly), so this is low-lag for gaming consoles too — one of the lowest-lag 60Hz and 120Hz capability I’ve seen in any 240Hz 1ms FastIPS panel.