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I have an Asus Pro Art PA279q. A 27″, supposedly factory calibrated color accurate monitor with 100% AdobeRGB coverage. I’ve had it for almost six years now.
During those six years I have kept it calibrated using the Datacolor Spyder5 and it’s software. After not bothering to calibrate it for quite some time, I tried again and the Datacolor software reported that it was only covering about 65% of the AdobeRGB space now. I tried resetting all of the settings within the OSD and using both the dedicated AdobeRG modes as well as the ‘user’ setting. No change. Did some Googleing, came across DisplayCAL and tried that, same results.
I’ve tried running DisplayCAL a few times with different settings, honestly don’t entirely know what I am doing, but every time I get basically the same results. It reports the monitor has between 65% and 67% AdobeRGB coverage. Has the monitor started to go bad? Is the Spyder5 actually the problem? Something else I am missing?
This is using a Windows 11 PC, if that matters.
Likely to us using some sRGB emulation (software, OSD, firmw failure). Also SpyderN degrade over time, it is not an accurate instrument.
Paint a 255 green patch on WIndows MS Paint, by naked ye it should be clear if it is AdobeRGB green or not.
Same if you et native/user OSD preset and paint 255 red patch. It should be a very saturated red close to P3 red.
If one of them looks like sRGB counterparts, you are running some kind of gamut emulation: AMD driver sRGB emulation, firmw failure so even switching OSD on menu behavior stays in the same internal preset, some misconfiguration for (old) macOS systems that makes DisplayCAL run on sRGB emulation, you running soem software gamut emulation (like DWMLUT)… lots of potential sources, you’ll have to check your system configuration.FYI: PA279Q was one of the worst GB-LED monitor in the market by the time it was sold ~2013-2014. Poor quality, lack of HW calibration and extreme overshoot. It was never good even oput of the box… but it is a GBLED. It’s spectral power distribution (SPD) shape wont’ change, so it so not a backlight issue… likely to be some sRGB emulation running on top.
PS: Get an i1d3 colorimeter, those spyders are mostly paperweights.Calibrite Display Pro HL on Amazon
Disclosure: As an Amazon Associate I earn from qualifying purchases.
