Hi, there capability to send your i1PRO to X-Rite for re-calibration, but it's expensive service.Apologies up front, as I do not know the technical details behind calibration, so some of my following terminology may be incorrect.
I have i1Pro RevD + i1DisplayPro meters that have been in storage for about 5 years, since I last calibrated my plasma tv. I recently got them back out to attempt to redo some of my calibrations, however, I have noticed that the i1Pro gives significantly lower "Y" reading values than the i1DisplayPro. For example, I know my VT60 is hitting about 115nits white peak, which the I1DisplayPro agrees with, but the i1Pro says 85nits...
I did read somewhere that i1Pro's do lose that light sensitivity as they age (mine was second hand when I bought it in the first place).
My question, is the i1Pro effectively useless for calibration/correction of i1Display now?
The RGB white balance graphs are fairly similar for both meters, but obviously gamma looks different between them.
Is the Y reading independent of the RGB readings? i.e. make a correction matrix to i1Display to use i1Pro RGB readings, but keep it's native Y reading??
Sorry if this makes no sense.
In my experience it's not unusual for different instruments to have noticeably different absolute Y calibration differences, even when brand new from the factory. (I think X-Rite may have improved the correspondence between the i1D3 and i1Pro2 with recent products though.). This discrepancy isn't really that significant in the scheme of things, since it's all about the color and luminance gradation. An ArgyllCMS/DisplayCAL correction matrix will make the two instruments have corresponding Y values anyway.I have i1Pro RevD + i1DisplayPro meters that have been in storage for about 5 years, since I last calibrated my plasma tv. I recently got them back out to attempt to redo some of my calibrations, however, I have noticed that the i1Pro gives significantly lower "Y" reading values than the i1DisplayPro. For example, I know my VT60 is hitting about 115nits white peak, which the I1DisplayPro agrees with, but the i1Pro says 85nits...
Thanks Ted & gwgillIn my experience it's not unusual for different instruments to have noticeably different absolute Y calibration differences, even when brand new from the factory. (I think X-Rite may have improved the correspondence between the i1D3 and i1Pro2 with recent products though.). This discrepancy isn't really that significant in the scheme of things, since it's all about the color and luminance gradation. An ArgyllCMS/DisplayCAL correction matrix will make the two instruments have corresponding Y values anyway.
You might want to clean the filter on the i1Pro2 though, just to make sure it doesn't have dust on it.
