[argyllcms] Re: Dell U2711 and i1Display Pro - ArgyllCMS vs i1Profiler

  • From: Tom Schumm <phong@xxxxxxxxx>
  • To: argyllcms@xxxxxxxxxxxxx
  • Date: Sat, 24 Nov 2012 18:43:19 -0500

On Saturday, November 24, 2012 10:14:19 PM Florian Höch wrote:
> what should work is installing & assigning the i1Profiler profile,
> selecting "Current settings" in dispcalGUI and then "Verify profile..."
> from the menu. It should use the currently assigned display profile.

That seemed to work. And it looks like the i1Profiler matrix profile is not 
more accurate overall, although it does a lot better on grays. It also seems 
to miss in the opposite direction on some colors, which ends up being 
subjectively "nicer", but not more accurate. So with ArgyllCMS, reds are too 
orange, and with i1Profiler, they're too anti-orange, or something.

So it looks like if I want accuracy, I will have to use a LUT profile.

Now here's a new wrinkle... Both i1Profiler and ArgyllCMS seem to be producing 
pretty accurate LUT profiles, but the one from i1Profiler looks a lot smoother 
in Adobe Camera Raw and Photoshop, whereas the ArgyllCMS one has some pretty 
ugly banding. Is there anything that can be done to get a smoother result? Use 
a larger testchart? Smaller? Add some other magic ingredient?

Tom Schumm

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