Acer 390Hz monitor - XV252QF

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Discorz
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Re: Acer 390Hz monitor - XV252QF

Post by Discorz » 26 Jun 2021, 18:56

fracture wrote:
24 Jun 2021, 14:55
...EVEN with VRR freesync mode on the ships barely degrade you can still count the windows.
Would you say this is close result to 390Hz with freesync enabled?
Image
960pps, middle cyan
Overall slightly blurry, very similar to 360Hz blur, faint ghosting trail behind ufo with no overshoot, pronounced steering wheel, barely distinguishable white windows?
Is there any overshoot in 240-390Hz range with freesync?
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ms.potatoe
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Joined: 05 Sep 2020, 15:09

Re: Acer 390Hz monitor - XV252QF

Post by ms.potatoe » 27 Jun 2021, 05:39

390Hz, Freesync, 960, middle, is sharper than that.

I have tried to take some photos but the result is horrible. My camera settings in manual mode:

-White Balance
-F: Auto...10.........100
-S: 1s 1/4s 1/8s ... 1/30s 1/60s 1/125s 1/250s 1/500s 1/1000s
ISO: Auto 100 200 400 800 1600 3200

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Discorz
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Re: Acer 390Hz monitor - XV252QF

Post by Discorz » 27 Jun 2021, 07:43

ms.potatoe wrote:
27 Jun 2021, 05:39
I have tried to take some photos but the result is horrible. My camera settings in manual mode:

-White Balance
-F: Auto...10.........100
-S: 1s 1/4s 1/8s ... 1/30s 1/60s 1/125s 1/250s 1/500s 1/1000s
ISO: Auto 100 200 400 800 1600 3200
Oh nice, your monitor arrived. :D

What you want is record a video instead of taking a picture.
Move your camera, follow the ufo matching its speed. Static camera footage is invalid way of demonstrating motion. Don't forget to keep your hands steady while recording. After that you could use freezeframe technique to extract accurate ufos that have aligned sync track. But its easier to just upload raw footage somewhere and giving us link so we could do it ourselves.

The important camera setting would be exposure - set it to 4 times the length of the monitor refresh (e.g. 240Hz/4=60 = 1/60s)
If you don't have the exact exposure value available (e.g. 144Hz/4=36 but u have 1/30s only) than use closest higher value (1/30s). Use only higher values in this case, not lower. So for 390Hz and 360Hz its better to use 1/60s than 1/125s since u don't have 1/100 or 1/90 option.
Second important setting is ISO - setting it to high will overbright and burn the detail out. So set it lower at around 200 for more detail. Also reducing monitor brighness will help here.
And last one is focus - its preferred not to use auto focus, but use whatever gives you the crispiest and consistent quality.

Now I'm not a camera expert but this is what worked best for me with smartphone camera, gave closest results to real life. :)

So the result should look something like this:
https://youtu.be/DfgvN5H5_T4 (strobing)
https://youtu.be/GuPHCX1EzBw (vrr)
Doing all Hz-OD-strobed-vrr combinations, extracting them and putting them in one picture is alot of work but its the best way to demonstrate motion performance.
download/file.php?id=1297
Last edited by Discorz on 29 Jun 2021, 10:33, edited 2 times in total.
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fracture
Posts: 30
Joined: 22 Jun 2021, 19:29

Re: Acer 390Hz monitor - XV252QF

Post by fracture » 27 Jun 2021, 13:13

Discorz wrote:
26 Jun 2021, 18:56
fracture wrote:
24 Jun 2021, 14:55
...EVEN with VRR freesync mode on the ships barely degrade you can still count the windows.
Would you say this is close result to 390Hz with freesync enabled?
Image
960pps, middle cyan
Overall slightly blurry, very similar to 360Hz blur, faint ghosting trail behind ufo with no overshoot, pronounced steering wheel, barely distinguishable white windows?
Is there any overshoot in 240-390Hz range with freesync?

better than that. the white windows are more clear and visible to make out than that. I am not done trying VRB yet. I am not settled with gsync compatible just yet. I really like the slightly better clarity of VRB and I can use Extreme Overdrive mode.

** a quick update on Normal vs Extreme overdrive mode. I notice 0 difference in artifacts or anything at Extreme overdrive with VRB on.
it feels slightly better in game with extreme od on. Perhaps Acer did overdrive correctly for once !

fracture
Posts: 30
Joined: 22 Jun 2021, 19:29

Re: Acer 390Hz monitor - XV252QF

Post by fracture » 27 Jun 2021, 13:16

Discorz wrote:
27 Jun 2021, 07:43
ms.potatoe wrote:
27 Jun 2021, 05:39
I have tried to take some photos but the result is horrible. My camera settings in manual mode:

-White Balance
-F: Auto...10.........100
-S: 1s 1/4s 1/8s ... 1/30s 1/60s 1/125s 1/250s 1/500s 1/1000s
ISO: Auto 100 200 400 800 1600 3200
Oh nice, your monitor arrived. :D

What you want is record a video instead of taking a picture.
Move your camera, follow the ufo matching its speed. Static camera footage is invalid way of demonstrating motion. Don't forget to keep your hands steady while recording. After that you could use freezeframe technique to extract accurate ufos that have aligned sync track. But its easier to just upload raw footage somewhere and giving us link so we could do it ourselves.

The important camera setting would be exposure - set it to 4 times the length of the monitor refresh (e.g. 240Hz/4=60 = 1/60s)
If you don't have the exact exposure value available (e.g. 144Hz/4=36 but u have 1/30s only) than use closest higher value (1/30s). Use only higher values in this case, not lower. So for 390Hz and 360Hz its better to use 1/60s than 1/125s.
Second important setting is ISO - setting it to high will overbright and burn the detail out. So set it lower at around 200 for more detail.
And last one is focus - its preferred not to use auto focus, but use whatever gives you the crispiest and consistent quality.

Now I'm not a camera expert but this is what worked best for me with smartphone camera, gave closest results to real life. :)

So the result should look something like this:
https://youtu.be/DfgvN5H5_T4 (strobing)
https://youtu.be/GuPHCX1EzBw (vrr)
Doing all Hz-OD-strobed-vrr combinations, extracting them and putting them in one picture is alot of work but its the best way to demonstrate motion performance.
download/file.php?id=1297
just order one and try it out for a few days. Are you in Croatia ? oh, I don't know how much it costs if your over there lol

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Discorz
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Re: Acer 390Hz monitor - XV252QF

Post by Discorz » 27 Jun 2021, 15:16

ms.potatoe wrote:
27 Jun 2021, 05:39
390Hz, Freesync, 960, middle, is sharper than that.
fracture wrote:
27 Jun 2021, 13:13
better than that. the white windows are more clear and visible to make out than that.
Are u sure? That ufo was supposed to be freesync enabled, not VRB.
But anyways, what about this one then?
Image
"390Hz, FreeSync ON, Overdrive locked, 960pps, middle cyan"
A bit sharper with more pronounced windows. Ghosting trail is definitely not accurate here, or I'm wrong?
But this one would seems to be too sharp for 390Hz IPS, doesn't it? It's closer to future 480Hz I bet.
fracture wrote:
27 Jun 2021, 13:16
just order one and try it out for a few days. Are you in Croatia ? oh, I don't know how much it costs if your over there lol
Unfortunately in Croatia it's impossible to order this monitor. And even if it was, the shipping cost would be unacceptable.
Last edited by Discorz on 27 Jun 2021, 17:35, edited 2 times in total.
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Zace
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Joined: 23 Jun 2021, 17:58

Re: Acer 390Hz monitor - XV252QF

Post by Zace » 27 Jun 2021, 16:21

Damn, that looks really really good. If we can see more photos to confirm this, acer really did well then. Also, big upgrade from first picture.

fracture
Posts: 30
Joined: 22 Jun 2021, 19:29

Re: Acer 390Hz monitor - XV252QF

Post by fracture » 27 Jun 2021, 16:23

it is still slightly better than that on VRR and VRB on the windows maybe ?. yeah VRB test is even more clear. oh really ? I had no idea.
Last edited by fracture on 27 Jun 2021, 16:24, edited 2 times in total.

ms.potatoe
Posts: 44
Joined: 05 Sep 2020, 15:09

Re: Acer 390Hz monitor - XV252QF

Post by ms.potatoe » 27 Jun 2021, 16:23

Image
"390Hz, FreeSync ON, Overdrive locked, 960pps, middle cyan"

Sure. The 3 eye windows are visible and the three lines in the white rectangles on the red base of the UFO are clearly visible ( 390Hz,Freesync, Middle ).

I have not tried much VRB. Normal mode doesn't reduce brightness ( it even increases it, similar Dyac+ ) and I dont perceive crosstalk, a light effect that remember me second level of the PureXP XG270. Extreme mode reduces brightness significantly and increases crosstalk.

I've recorded a video but it is useless, it has nothing to do with real life. I think it applies the settings ( s 1/60, ISO 200, F 20 ) to the photos not to the video.

https://youtu.be/MVgCovG5sjE

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BTRY B 529th FA BN
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Re: Acer 390Hz monitor - XV252QF

Post by BTRY B 529th FA BN » 27 Jun 2021, 16:47

What are you guys/gals looking for? Clean image? The best settings for clean image?

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