Hi! I joined because I remember seeing some G-Sync threads on these forums about G-Sync, but I have some specific questions. I bought VG248QE for fast-paced MP games, but I use my VT60 plssma for SP games. Obviously, the image quality difference between the plasma screen and the TN screen is huge. I kind of hate VG248QE color accuracy...
I am also an experienced calibrator and in the process of launching a website to start calibrating displays professionally. I use i1Pro (certified) and profile i1Display Pro with i1Pro to measure displays. I am really interested to know if someone out there has similar equipment and had taken any CalMAN RGB/5, HCFR, or whichever program measurements of the regular LightBoost and ULBM G-Sync modes? What about the original standard and the new G-sync modes?
I keep hearing that G-Sync considerably improves color accuracy of VG248QE and I care more for that then I care for the G-Sync, but I do care for it too. I already have a plasma for high quality, but I also want good quality in MP games and very high refresh rates.
Some say that G-Sync only makes the ULBM mode use the same colors as the original or new G-Sync (non-LightBoost) mode. I am not sure what to believe. I am finding calibrating of this monitor without G-Sync in both modes quite problematic. I apologize in advance if I sound like I'm trying to educate an already knowledgeable community.
Some issues I had:
1. You absolutely have to have an accurate spectrometer in addition to a colorimeter to make accurate measurements because colorimeters use manufacturer reference display type tables, but these reference display types may differ from your own display. So, its kind of hard to judge results other than those obtained with the right equipment...
2. No matter whether I profiled or whether I used CalMAN 5/RGB, i1Profiler (terrible...), or even the new king in town - ArgyllCMS, I kept getting bad WB accuracy for the darker/black region in LightBoost mode. The squares in this test were never neutral and always had either a red/brown, green, or purple tint - http://www.lagom.nl/lcd-test/black.php . TVs have manual WB controls, so I can always correct dark grays and blacks and make them neutral, but it is not possible with software LUTs/ICC profiles. I think it happened because of 2 things - LUT interpolation and bad uniformity. Thing is... non-calibrated blacks/dark grays even in non-G-sync LightBoost mode were somewhat neutral, so that meant uniformity was not the cause, leaving only one cause - LUT interpolation. LUT interpolation simply means that software did not calibrate each and every level of the 256 grayscale levels - it simply guessed some of them (incorrectly). Not even ArgyllCMS, which took more than hundred measurements, could provide neutral grays and blacks. Some were always reddish or greenish, etc. I never had a single TV like that...
3. I know that using any 8bit LUT will result in some grayscale gradient banding, but VG248QE calibration specifically results in purplish bands on the left upper and right lower areas of this ramp - http://www.lagom.nl/lcd-test/gradient.php - in the 0-7.5% of the blackest/darkest areas.
I am just wondering if anyone else had similar issues and had them solved by installing a G-Sync module. Did it allow you to have accurate/neutral blacks AFTER calibration in that Lagom.nl test link I provided? What about grayscale ramp gradient - any non-neutral bands after calibration?
What about the colorspace/color gamut?
I would SO SO SO appreciate if someone with i1Display Pro or Munki Display colorimeter could run a default, non-calibrated grayscale measurements of
1. Grayscale in 10% steps
2. RGBYCM 25, 50, 75, 100% saturation sweeps
using the latest HCFR - http://sourceforge.net/projects/hcfr/files/Windows/3.1.0.7/
I am also an experienced calibrator and in the process of launching a website to start calibrating displays professionally. I use i1Pro (certified) and profile i1Display Pro with i1Pro to measure displays. I am really interested to know if someone out there has similar equipment and had taken any CalMAN RGB/5, HCFR, or whichever program measurements of the regular LightBoost and ULBM G-Sync modes? What about the original standard and the new G-sync modes?
I keep hearing that G-Sync considerably improves color accuracy of VG248QE and I care more for that then I care for the G-Sync, but I do care for it too. I already have a plasma for high quality, but I also want good quality in MP games and very high refresh rates.
Some say that G-Sync only makes the ULBM mode use the same colors as the original or new G-Sync (non-LightBoost) mode. I am not sure what to believe. I am finding calibrating of this monitor without G-Sync in both modes quite problematic. I apologize in advance if I sound like I'm trying to educate an already knowledgeable community.
Some issues I had:
1. You absolutely have to have an accurate spectrometer in addition to a colorimeter to make accurate measurements because colorimeters use manufacturer reference display type tables, but these reference display types may differ from your own display. So, its kind of hard to judge results other than those obtained with the right equipment...
2. No matter whether I profiled or whether I used CalMAN 5/RGB, i1Profiler (terrible...), or even the new king in town - ArgyllCMS, I kept getting bad WB accuracy for the darker/black region in LightBoost mode. The squares in this test were never neutral and always had either a red/brown, green, or purple tint - http://www.lagom.nl/lcd-test/black.php . TVs have manual WB controls, so I can always correct dark grays and blacks and make them neutral, but it is not possible with software LUTs/ICC profiles. I think it happened because of 2 things - LUT interpolation and bad uniformity. Thing is... non-calibrated blacks/dark grays even in non-G-sync LightBoost mode were somewhat neutral, so that meant uniformity was not the cause, leaving only one cause - LUT interpolation. LUT interpolation simply means that software did not calibrate each and every level of the 256 grayscale levels - it simply guessed some of them (incorrectly). Not even ArgyllCMS, which took more than hundred measurements, could provide neutral grays and blacks. Some were always reddish or greenish, etc. I never had a single TV like that...
3. I know that using any 8bit LUT will result in some grayscale gradient banding, but VG248QE calibration specifically results in purplish bands on the left upper and right lower areas of this ramp - http://www.lagom.nl/lcd-test/gradient.php - in the 0-7.5% of the blackest/darkest areas.
I am just wondering if anyone else had similar issues and had them solved by installing a G-Sync module. Did it allow you to have accurate/neutral blacks AFTER calibration in that Lagom.nl test link I provided? What about grayscale ramp gradient - any non-neutral bands after calibration?
What about the colorspace/color gamut?
I would SO SO SO appreciate if someone with i1Display Pro or Munki Display colorimeter could run a default, non-calibrated grayscale measurements of
1. Grayscale in 10% steps
2. RGBYCM 25, 50, 75, 100% saturation sweeps
using the latest HCFR - http://sourceforge.net/projects/hcfr/files/Windows/3.1.0.7/