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Re: LG 27" 1440p 240hz OLED Ultragear 27GR95QE

Posted: 30 Jan 2023, 14:42
by GammaLyrae
Chief Blur Buster wrote:
29 Jan 2023, 16:22

I'm currently working to press for progress behind the scenes. There is very limited control of how Blur Busters can influence a giant panel factory to modify the backplanes, but I am working hard to move the needle at least a little. Much like I toppled a few reluctant dominoes for 60Hz single-strobe support on LCDs. Nothing new yet to announce about BFI on OLEDs, except I wouldn't mind more people to begin commenting about lack of BFI to make the vendors realize there's demand.

For now, the path with OLEDs is brute framerate-based motion blur reduction (which OLEDs excel at), rather than flicker-based motion blur reduction (which is good for retro content), but both needs to be made available. I'm a fan of seeing ~500-1000 Hz OLEDs come out by end of the decade, and 1000fps zero-latency reprojection-based frame generation getting built into major engines such as UE5 (doable with today's GPU technology now!) -- then demand for strobing will fall quite a bit except for retro content and video content, ala 60 years of retro 60fps 60Hz content.

However, even within specific OLED backplane limitations, I'd still like to see 60Hz 4ms MPRT and 120Hz 4ms MPRT strobing support added to 240Hz OLEDs as soon as possible. But there's no good news yet on BFI.


Good to know. I agree that a good first step would be 4ms MPRT for computer monitor sized OLED - the LG CX offered this for 60hz and 120hz, though the C1 forced 60hz up to 8ms to make it brighter (removing the user choice to increase motion clarity), and the c2 regressed further by removing BFI entirely for 120hz content, leaving only 8ms BFI for 60hz.

If we can't get XG2431 granularity, a good first step given where OLED brightness is at right now (between LG's latest panels and what Samsung has cooking with their QDOLED), returning 4ms MPRT options for 60hz and 120hz would be a great compromise between peak brightness for the non-black frames, backplane limitations, and perceived motion clarity. With another generational leap in terms of peak brightness, providing options for 2ms would be good, too. Not quite "motion nirvana", but within spitting distance of slow phosphor decay CRTs that many users already loved. An understated quality of LG's solution (in their 2020 and 2021 models at least) is their BFI solutions provided total screen uniformity with zero crosstalk - a feat that even the XG2431 can't achieve at 120hz (though it comes very close, it's around 90% perfect at that refresh rate)

I appreciate your response here. Driver level BFI would be a welcome addition, as game injections (specialK, reshade) can flag anti cheat services or may break if you try to use them in combination with other injection services (geo-11, the soon to be open source 3dmigoto replacement, game specific mod managers, etc).

Re: LG 27" 1440p 240hz OLED Ultragear 27GR95QE

Posted: 02 Feb 2023, 14:53
by Boop
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Re: LG 27" 1440p 240hz OLED Ultragear 27GR95QE

Posted: 02 Feb 2023, 18:25
by Grasshopper24
Boop wrote:
02 Feb 2023, 14:53
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He didn’t cover input lag.. INTERESTING

Re: LG 27" 1440p 240hz OLED Ultragear 27GR95QE

Posted: 04 Feb 2023, 02:51
by Chief Blur Buster
Boop wrote:
02 Feb 2023, 14:53
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While I appreciate the disclosures, you're not supposed to compare 1080pixels/sec vs 1440pixels/sec this way. By zooming up the images to equal size, you're amplifying motion blur of 1440p display by (1440/1080)ths more blur than 1080p displays.

Re: LG 27" 1440p 240hz OLED Ultragear 27GR95QE

Posted: 04 Feb 2023, 13:37
by timbowman1
How does software BFI look on a 240hz oled @chief ?

Re: LG 27" 1440p 240hz OLED Ultragear 27GR95QE

Posted: 09 Feb 2023, 02:42
by evmadic
Apparently if you want 12bit colors with lowest input lag, you have to use HDMI 2.1
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Re: LG 27" 1440p 240hz OLED Ultragear 27GR95QE

Posted: 11 Feb 2023, 21:37
by binodynamic
shoto1699 wrote:
17 Jan 2023, 20:48
Anyone else get their monitor today? Still trying to figure out what settings to use for this
I’ve been using the monitor for almost 3 weeks and settled with using on Gamer 1 with colour temp set to “C1”. Other than that you can adjust the rest to your liking. I have mine set to: brightness 60-70 (depending on what I’m doing), contrast 68, sharpness 50, gamma mode 2, colour temp “C1”, black stabilizer 50, and I have gsync disabled to avoid VRR flickering.

Re: LG 27" 1440p 240hz OLED Ultragear 27GR95QE

Posted: 14 Feb 2023, 12:13
by Boop
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[Moderator note -- Made the images zoomable for closer inspection]

Re: LG 27" 1440p 240hz OLED Ultragear 27GR95QE

Posted: 14 Feb 2023, 18:19
by indstri
I thought there was discussion on higher input lag on these 240 displays? Is that only the Flex vs the native LGs as this testing shows excellent numbers.

Re: LG 27" 1440p 240hz OLED Ultragear 27GR95QE

Posted: 14 Feb 2023, 18:41
by Chief Blur Buster
Boop wrote:
14 Feb 2023, 12:13
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It's pretty neat seeing 240Hz pursuits that is competitive/clearer than 360Hz pursuits and low-quality strobed pursuits!

Strobeless motion blur reduction FTW -- ergonomic flickerfree.

While I am sad there's no BFI for my legacy 60Hz material (emulators, consoles, videos, low frame rate material), it a darn near nigh perfect match to linear Blur Busters Law.

Pursuits of 240Hz displays with (for all practical purposes, to human eyes) 0ms GtG almost perfectly match an Adobe linear motion blur (Simulation of 1/240sec SLR camera shutter).

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