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Dell S2716DG 1440 144 Hz G-Sync Owners Thread - Page 181

post #1801 of 4647
Quote:
Originally Posted by ToKuten View Post

i haven t tried any icc files yet, but without, yes too bright frown.gif


Will try to resume all tests tomorrow, without icc profile for brightness issue on desktop use (white page) but mostly it s:
ulmb ON with 50 brightness and 100 pulse width
or
g-sync ON with 15/20 (no more) brightness.

since today, i prefer ulmb ON for desktop work (word, excel, browsing, not talking about photoshop since i am not working on it.)

Before i was working on laptop 15' wxga or lcd 17' and never had this headache, until i found it, the brightness was the primary cause before the size of letter on google chrome.

ICC profiles when loaded correctly will cause the screen to stop being so bright/washed out. This seems to be caused by the insane gamma of this monitor.

ULMB lowers the perceived brightness because it's actually flashing the backlight really fast. You can observe it with a phone camera even on the preview. It'll look like an old CRT when filmed smile.gif

As for your issues with headaches I haven't experienced any even without calibration, but then again some people are more sensitive than others. I hope the profile fixes the headaches for you.

From the zooming issue maybe you are just not used/not tolerant of the increased pixel density? It's smaller than typical 1080p 24" screens as well. For me I find it still too big... When I saw how unadjusted scaling (100%) with Windows on the MacBook Pro's Retina 2560x1600 13" display looks I went "there's a display for me!" and my colleagues went "*** this is too small" biggrin.gif
Edited by yellows - 1/28/16 at 5:38pm
post #1802 of 4647
Mads1 try this new profile and let me know if it is better.

100cdm2

https://drive.google.com/folderview?id=0B5cNNyJqRoXXLXFBRllNZ3VNQm8&usp=sharing
post #1803 of 4647
Well I've submitted an official bug report to NVIDIA on this issue. I suggest everyone take a moment to submit a bug report to NVIDIA. You can use the reference number from my ticket if you want to try to gain traction on this.

Reference#: 160128-001086
post #1804 of 4647
Quote:
Originally Posted by majnu View Post

Mads1 try this new profile and let me know if it is better.

100cdm2

https://drive.google.com/folderview?id=0B5cNNyJqRoXXLXFBRllNZ3VNQm8&usp=sharing

Ok gave it a go does seem abit better, made the desktop colours pop abit, will use this for a few days and il let you know, well done for doing these profiles. thumb.gif
post #1805 of 4647
Quote:
Originally Posted by BrightShadow View Post

Generally I think a stuck pixel is considered a pixel that's always on with one color, like a pixel that is always green, and a dead pixel is one that is always off or dark.

The screen won't look right till you go to nVidia's control panel and tone down the gamma setting, or try some of the ICC profiles people have posted. Every monitor is different, and its highly likely none of the ICC profiles or nVidia settings configurations will perfectly match your monitor, but they could be a good starting point. To date, i've spent hours messing with settings to get the monitor to a better and better point, and i'm not even done yet.

When you decide to start messing with the gamma and other settings, or the ICC profiles, navigate to http://www.lagom.nl/lcd-test/ and check out the various test pages, especially the gamma page, and the black level page. I highly suggest you consider not only what you're seeing on the lagom website, but also what feels best to your eyes as well, since your enjoyment is the ultimate purpose here.

As for the current settings I am using, they are as follows (although as I pointed out, I'm not certain i'm done yet)

OSD:
35 brightness
72 contrast

NVCP:
45 brightness
40 contrast
0.67 gamma

With these settings I do lose the final shade of gray (square 1 in black levels page), however in general the black levels are better and banding in dark areas is less noticeable with this panel/setup.

i have done some visual tests (http://www.lagom.nl/lcd-test/) for contrast and gamma calibration in a dark environment and in full-screen mode.(230 cm between me and the monitor for gamma test)

color: standard
OSD:
30 brightness
70 contrast

NVCP:
GSYNC: ON
45 brightness
40 contrast
0.67 gamma
50% vibrance
Hue 0
120HZ

i have this result :
48% 1,5
25% 1,8
10% 1,9



With TFT's ICC profile (too bright on blank page)
OSD:
RGB 97 99 96
Contrast 75
Brightness 26
Response Time Normal

NCP
2560x1440p Gsync On, Vsync On, 122HZ
Colour Depth: Highest 32bit
Output Colour Depth 8bpc
Output format: RGB
Dynamic Range: Full

i have this result :
48% 1,3
25% 1,6
10% 1,8



With majnu's ICC profile v1: (too bright on blank page)
OSD:
RGB: 99 100 96
Contrast 75
Brightness 29
Response Time Normal

NCP
2560x1440p Gsync On, Vsync On, 120HZ
Colour Depth: Highest 32bit
Output Colour Depth 8bpc
Output format: RGB
Dynamic Range: Full

result:
48% 1,3
25% 1,6
10% 1,8



With majnu's ICC profile v2: (better than previous version but still bright on blank page)
OSD:
RGB 97 99 95
Contrast 75
Brightness 22
Response Time Normal

NCP
2560x1440p Gsync On, Vsync On, 120HZ
Colour Depth: Highest 32bit
Output Colour Depth 8bpc
Output format: RGB
Dynamic Range: Full

result:
48% 1,4
25% 1,6
10% 1,8



With majnu's ICC profile v4: ( bright on blank page)
SD:
RGB 97 100 97
Contrast 76
Brightness 22
Response Time Normal

NCP
2560x1440p Gsync On, Vsync On, 122HZ
Colour Depth: Highest 32bit
Output Colour Depth 8bpc
Output format: RGB
Dynamic Range: Full

result:
48% 1,3
25% 1,6
10% 1,8



With yellow's ICC profile : 20 brightness, 75 contrast, 97/99/100 RGB 50% vibrance Hue 0 120HZ (on blank page, hurt less than others icc profile)
result:
48% 1,3
25% 1,6
10% 1,8


Conclusion:
On their website, the bands should blend in at 2.25 (48%), 2.20 (25%), and 2.17 (10%). the best result i have is for 1.9 10%, the only way to reach 1,6 (48%) is by using ncp with gamma to 0,60.


Others are getting the same value on this monitor ??
Edited by ToKuten - 1/29/16 at 9:29am
post #1806 of 4647
Nobody can make this monitor act perfectly with color changes, but it's not the monitor's fault, it's Nvidia to blame (but also we can blame Dell for not calibrating these things). I have tried about 7 different ICC profiles and while one of the early ones posted here was pretty good, all of them introduced various colors into the gray shades on my panel which makes shadow detail look horrible.


Edit: Actually you could probably make this monitor look perfect with an ATI card *facepalm*
post #1807 of 4647
Could someone tell me if this is banding? I have quite alot of it on dark surfaces that have different levels of brightness.
This SS is from a night sky in WoW.


It looks quite...terrible thumbsdownsmileyanim.gif

I have tried different ICC profiles and tried different settings in NCP but these bands are still there.
post #1808 of 4647
144hz will make the monitor slightly darker compared to 120hz. What are these 48, 25, 10 values?
Quote:
Originally Posted by Garham View Post

Could someone tell me if this is banding? I have quite alot of it on dark surfaces that have different levels of brightness.
This SS is from a night sky in WoW.


It looks quite...terrible thumbsdownsmileyanim.gif

I have tried different ICC profiles and tried different settings in NCP but these bands are still there.

yes that is banding
post #1809 of 4647
Skybox banding like that would be visible on every monitor, it's just how it's made.
post #1810 of 4647
majnu: it s for the gamma calibration you can find more details here: http://www.lagom.nl/lcd-test/gamma_calibration.php#gamma-test-2.png
I used this test.
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