On Jan 12, 2020, at 3:13 AM, Roger Breton via colorsync-users <colorsync-users@lists.apple.com> wrote:
Judging by the shape of the graph in the shadows, I am tempted to concluded that there is "poor separation of tones"?
Hey Roger! This feels similar to looking at color gamut renderings. In both cases, while one can come up with a hypothesis, I think it’s important not to conclude anything by looking at the profile and/or it’s calibration curves. In order to make statements about final print quality one must make prints with the profiles and evaluate those prints, both visually and colorimetricially with measurements. Or in your example of display calibration, one must visually analyze evaluation images onscreen and take verification measurements with the final display profile. Again, visual and colorimetric evaluations with the final profile are essential to making statements / conclusions. After all, the calibration curves might look incredible and smooth but, in some situations, the final image quality could still be poor. The two don’t *necessarily* correlate. PS: if you want to see more examples and dialog about how color gamut comparisons can yield false conclusions, check out the "Polarized M3 Observations” section of my i1Pro3+ review. www.on-sight.com/xrite-i1pro3-review/ Scott Martin www.on-sight.com Precise color science for printmaking professionals