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The provided CCSS correction for RGB OLED family on an i1d3 in displaycal mentions older Sony PVM display and a galaxy S7. How accurate is this CCSS correction for a modern OLED display such as an iPad Pro M4? My understanding is that the gamut of RGB OLED has not changed much but the underlying SPD is tweaked slightly because new OLED emitters materials are used. When measuring the white point of the iPad Pro M4 to “fine tune” calibration using the provided CCSS correction, the white point reported by displaycal with i1d3 is very very close to D65 without any correction (+-0.005 xy). Can I trust this? Also, how accurate are luminance measurements from the i1d3? My colorimeter is 5 years old. I can’t remember where I read this but they said that the luminance measurements can have +- 4% error depending on the model.
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Disclosure: As an Amazon Associate I earn from qualifying purchases.The provided CCSS correction for RGB OLED family on an i1d3 in displaycal mentions older Sony PVM display and a galaxy S7. How accurate is this CCSS correction for a modern OLED display such as an iPad Pro M4? My understanding is that the gamut of RGB OLED has not changed much but the underlying SPD is tweaked slightly because new OLED emitters materials are used. When measuring the white point of the iPad Pro M4 to “fine tune” calibration using the provided CCSS correction, the white point reported by displaycal with i1d3 is very very close to D65 without any correction (+-0.005 xy).
Can I trust this?
No correction? unlikely. A “no correction” scenario will use the colorimetr spectral sensivities as display CCSS. So unless you dump them and associated x’/y’/z’-bar observer matches standard observer it won’t be accurate. Also this depends on unit itself, yours maybe close, mine not.
If there is no OLED iPad and using some of the default RGBOLED CCSS you got that +-0.005 xy, then trust it if you see no visual color cast
Also, how accurate are luminance measurements from the i1d3?
Uncorrected? who knows. Device is not menat to be used that way.
My colorimeter is 5 years old. I can’t remember where I read this but they said that the luminance measurements can have +- 4% error depending on the model.
i1d3 devices ages well. I won’t worry about 5 or 10yo it is stored propelry and has no physical damage by falls.
My bad, I meant no correction on the “fine tune” white point setting for the iPad. The +-0.005 xy measurements were taken using the RGB OLED family CCSS correction and default iPad calibration in reference mode. There isn’t a noticeable color cast but the white point doesn’t match at all my MacBook Pro XDR with PFS WLED backlight (I used the appropriate colorimeter correction when measuring that display too). Is there a white point offset I should use on the iPad Pro to have a closer match to my laptop? Or is it better to use an offset on the MacBook Pro XDR?
-it could be your i1d3 spectral sensivity curves (firmware data) not matching exactly your i1d3 behavior (less likely)
-it could be the RGB OLED CCSS not matching your OLED iPad
-it could be you, not matching CIE 2 degree 1931 standard observer
or a mix of all of them. When this happens, choose the “whitest” display (subjective) as reference then apply visual whitepoint editor in DisplayCAL (whietpoint, chromaticity coordinates, 3 ball icon)
