Originally Posted by zoyd
You can but you need measurements of your display using a reference colorimeter or spectrometer to do so.
There are two types of corrections available, a matrix correction which is display type and colorimeter dependent, and a spectral (ccss) type which is only display type dependent. Spectral type corrections are only available for colorimeters that have spectral sensitivities built in and accessible in the firmware. This includes the display pro, colormunki display, and spyder 4.
Whether or not you need one can not be answered with any certainty without actually measuring your display with a reference spectrometer and finding out how far off (in dE units) your meter is without any correction. In this situation the conservative approach (meaning it has a good chance of improving things and will not worsen the situation) is to choose the spectral type (ccss) correction that most closely matches your display type. Beyond that there is nothing you can do without reference measurements.
I do have i1Display Pro, but I do not have a reference colorimeter or a spectrometer. I know this - if I select not to use a correction file in HCFR wizard and select "Refresh" for Display Type then my red measurement reading is lower
than if I were not use a correction file in HCFR wizard, but select "CCFL LCD bla bla" for Display Type. I think that these Display Type selections are files from X-Rite i1Profiler because I see these selections in HCFR and also in dispclaGUI. Or these Display Type files are from Argyll... I do not know, do you??? Are they the "Spectral Type Corrections"???
To summarize with arbitrary numbers - "Refresh" display type = red @ 50% IRE is 100%, "CCFL" display type = red @ 50% IRE is 102%. That means that for CCFL screens, my i1Display Pro red readings without CCFL correction
are lower than what they should be. But I have seen people say something completely opposite - http://www.luminous-landscape.com/forum/index.php?topic=61152.0;wap2
and that in reality, CCFL readings with i1Display Pro without CCFL correction are actually higher! What is the general consensus - does i1Display Pro read reds higher or lower than they are on CCFL screens?
BTW, how long can I leave my colorimeter long? I leave it on like 10hrs per day - bad?