On Sat, Jan 4, 2020 at 10:09 AM Roger Breton via colorsync-users < colorsync-users@lists.apple.com> wrote:
To give you a sense of what I'm seeing I've added some screen grabs taken with an iPhone, which tends to exaggerate panel / color aberrations. https://drive.google.com/open?id=1DSpUzIAgxsiG8qi8FKr2uJ5_P4MNmTKu
I can see some differences from left to right ☹ I don't think you'd be able to improve on this difference.
On one hand these pics do not do justice to in person look. On the other hand, it's amazing I expect a phone cam to give anyone a fair sense of what's going on... and it does! We truly live in a marvelous age. Part of what you are commenting on in pics is normal IPS off axis response, related to "glow". The phone's adaptation really amplifies the effect. Sitting in front you would say it's not significant. If you tried to call it out, you would notice that other off-axis effects are more discernible as you just shift position in front of screen... And IPS is known for quality viewing angles! They key is side by side, your attention will not be called to the difference, you will notice other effects.
When put in "Adobe RGB" mode, these two displays agree side-by-side as good as my custom cal. No trouble believing they hit < 2dE across board.
Do you mean a 2 DeltaE (whatever) in screen uniformity?
I mean that in Adobe RBB mode, it's not unreasonable to predict that Dell hits 2 delta-E conformance across the population. IOW, yes consistency across the face of one panel, and conformance of the population to the standard color space.
I may—or may not—take the time to measure and evaluate the ICC presets.
It will be worth your time.
Ok, thanks for the encouragement! Thinking about getting this all scoped out and into a blog to post for DCal forums too.