A Cintiq Pro may pass Display "Quality" with the ColorChecker Classic target, but fail with others (IDEAlliance test charts, IT8.7-3 CMYK, IT8.7-4 CMYK, etc...). The "Pass"/"Fail" result in Display QA is determined by two things: "Average dE" (average color difference of all the patches) and "Maximum dE all patches" (the patch with the worst color match). If either one exceeds the user-defined tolerance (less than 2-3 is not perceptible, even to the trained eye), the user will receive a failing grade. The ColorChecker Classic target has a collection of 24 colors that are fairly reproducible on most quality displays. This will typically result in a "Pass" in most well behaved monitors. The remaining charts are actually designed for printer profiling and have a number of color patches that are not very reproducible on even the very best monitors. Even though the "Average dE" might receive a passing grade, a single out-of-gamut color patch could result in a failing grade in the "Maximum dE" field. When using Display "Quality", it would be advisable to review all data in the "QA Report" workflow step...not just the overall "Pass"/"Fail" grade. For instance, perhaps the "Lowest 90% dE of the "Average dE results" would provide good feedback for checking the display's true performance.
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