Apache Log4j2 Response Click Here for Details

Display "Quality" Fails With Some Targets and Passes With Others

Customer's display passes "Quality" test with some color targets but fails with other targets A profiled monitor could pass Display "Quality" with the ColorChecker Classic target but fail with others (IDEAlliance testcharts, 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, the user will receive a failing grade. 

The ColorChecker Classic target has a collection of 24 colors that are fairly reproducible on most 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. 

Need a Quote? Contact Sales(888) 800-9580

Technical Questions? Contact Support(888) 826-3042