LG 27GK750F-B - 240Hz, 27" 1ms Blur reduction, Freesync

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mushi
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Joined: 02 Feb 2019, 11:46

Re: LG 27GK750F-B - 240Hz, 27" 1ms Blur reduction, Freesync

Post by mushi » 24 Aug 2020, 15:00

mine is still ok since I've applied the fix on the first post on the first day I got the screen.

here's my attempt to record video with my phone the testufo, using the tips chief said on the post (focus on the text above, and then pan manually):
https://drive.google.com/file/d/12kIizJ ... sp=sharing

looks good :) i have a cynical eye too. i'm a happy user
do you experts notice anything wrong? :P

KingMusti
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Joined: 23 Aug 2020, 13:10

Re: LG 27GK750F-B - 240Hz, 27" 1ms Blur reduction, Freesync

Post by KingMusti » 24 Aug 2020, 19:50

Chief Blur Buster wrote:
24 Aug 2020, 12:08
KingMusti wrote:
23 Aug 2020, 13:15
Hi, I wanted to ask if the results are good, once with G-Sync and once with LG MBR. my monitor is the lg 27gk750b-f
Hey,

Great photos! Did you use stationary camera (OK for strobe crosstalk, if exposure is limited to exactly one refresh cycle) or pursuit camera (best for universal display motion blur photography).

For more accurate strobe crosstalk photography, please use www.testufo.com/ghosting and follow the handwave smartphone instructions. The sync track makes it easier to tell whether you pursuited correctly or not.
Hey,

I used a 960fps camera to get these photos. I've tested a few monitors before, but the lg 27gk750b-f is just amazing with the MBR function.
I currently have the ViewSonic xg270 and the Asus VG279QM
and i will send them back and stay with my old gk750 because it is simply the best ( Watch first 2 photos)

and sorry for my bad english guys :D

KingMusti
Posts: 3
Joined: 23 Aug 2020, 13:10

Re: LG 27GK750F-B - 240Hz, 27" 1ms Blur reduction, Freesync

Post by KingMusti » 09 Sep 2020, 09:44

Chief Blur Buster wrote:
24 Aug 2020, 12:08
KingMusti wrote:
23 Aug 2020, 13:15
Hi, I wanted to ask if the results are good, once with G-Sync and once with LG MBR. my monitor is the lg 27gk750b-f
Hey,

Great photos! Did you use stationary camera (OK for strobe crosstalk, if exposure is limited to exactly one refresh cycle) or pursuit camera (best for universal display motion blur photography).

For more accurate strobe crosstalk photography, please use www.testufo.com/ghosting and follow the handwave smartphone instructions. The sync track makes it easier to tell whether you pursuited correctly or not.
Image

[Moderator Note -- Fixed IMGUR URL]

daniloberserk
Posts: 28
Joined: 22 Aug 2017, 16:50

Re: LG 27GK750F-B - 240Hz, 27" 1ms Blur reduction, Freesync

Post by daniloberserk » 20 Dec 2020, 14:47

May I ask if there's a point overclock the vertical total if I'm using freesync? Does it make a difference?

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A Solid lad
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Re: LG 27GK750F-B - 240Hz, 27" 1ms Blur reduction, Freesync

Post by A Solid lad » 22 Dec 2020, 06:44

daniloberserk wrote:
20 Dec 2020, 14:47
May I ask if there's a point overclock the vertical total if I'm using freesync? Does it make a difference?
AFAIK, you'll get marginally lower display lag near the center of your screen.
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daniloberserk
Posts: 28
Joined: 22 Aug 2017, 16:50

Re: LG 27GK750F-B - 240Hz, 27" 1ms Blur reduction, Freesync

Post by daniloberserk » 22 Dec 2020, 17:38

A Solid lad wrote:
22 Dec 2020, 06:44
daniloberserk wrote:
20 Dec 2020, 14:47
May I ask if there's a point overclock the vertical total if I'm using freesync? Does it make a difference?
AFAIK, you'll get marginally lower display lag near the center of your screen.
Thanks! For some reason when I OC my display with CRU it doesn't detect as an freesync display. So I'll probably not ocing for now =)

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Chief Blur Buster
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Re: LG 27GK750F-B - 240Hz, 27" 1ms Blur reduction, Freesync

Post by Chief Blur Buster » 22 Dec 2020, 18:15

Overclocked vertical total is useful for strobe crosstalk reductions and/or latency reductions.

That said, decision whether to overclock the vertical total OR overclock the refresh rate, depends on panel capabilities. For example, max-unoverclocked-Hz with overclocked Vertical Total, sometimes means the monitor can handle an overclocked Hz with a reduced vertical total.

Monitors does not always work this way especially if they use TCONs that scan-converts (see this Quick Frame Transport related post where some panels refresh at a different scanout velocity than the cable), and monitors can sometimes pop up an unwanted symbollic "OUT OF RANGE" during Hz overclocking even if the panel theoretically works overclocked just fine.
Head of Blur Busters - BlurBusters.com | TestUFO.com | Follow @BlurBusters on Twitter

       To support Blur Busters:
       • Official List of Best Gaming Monitors
       • List of G-SYNC Monitors
       • List of FreeSync Monitors
       • List of Ultrawide Monitors

daniloberserk
Posts: 28
Joined: 22 Aug 2017, 16:50

Re: LG 27GK750F-B - 240Hz, 27" 1ms Blur reduction, Freesync

Post by daniloberserk » 23 Dec 2020, 20:15

Chief Blur Buster wrote:
22 Dec 2020, 18:15
Overclocked vertical total is useful for strobe crosstalk reductions and/or latency reductions.

That said, decision whether to overclock the vertical total OR overclock the refresh rate, depends on panel capabilities. For example, max-unoverclocked-Hz with overclocked Vertical Total, sometimes means the monitor can handle an overclocked Hz with a reduced vertical total.

Monitors does not always work this way especially if they use TCONs that scan-converts (see this Quick Frame Transport related post where some panels refresh at a different scanout velocity than the cable), and monitors can sometimes pop up an unwanted symbollic "OUT OF RANGE" during Hz overclocking even if the panel theoretically works overclocked just fine.
Thank you very much Chief! I'll try to OC again later, just need to find why it just doesn't detect Freesync on the AMD Driver. I just love all the knowledge and kindness that people on this community have to help! Happy Holidays!

lobotomy
Posts: 1
Joined: 13 Jan 2021, 20:59

Re: LG 27GK750F-B - 240Hz, 27" 1ms Blur reduction, Freesync

Post by lobotomy » 13 Jan 2021, 21:02

so I followed the advice in this thread to set up a custom res with CRU to eliminate the stutter issue with ULMB. The issue is that I play games at 1728x1080 stretched (16:10, used to play 1680x1050 but made a custom res for this) and with stretched res I'm getting the stutter issue. Can anyone give advice on how to set up my custom res to eliminate the stutter? Obviously using the same pixel timings for 1920x1080 doesn't work for the smaller res.

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Re: LG 27GK750F-B - 240Hz, 27" 1ms Blur reduction, Freesync

Post by Chief Blur Buster » 13 Jan 2021, 22:35

Some ULMB monitors have incompatibility with monitor scaling with ULMB. Use GPU scaling instead with ULMB.
Head of Blur Busters - BlurBusters.com | TestUFO.com | Follow @BlurBusters on Twitter

       To support Blur Busters:
       • Official List of Best Gaming Monitors
       • List of G-SYNC Monitors
       • List of FreeSync Monitors
       • List of Ultrawide Monitors

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