I added a DIN099c gamut plot for the Dell in native mode with sRGB, Adobe RGB and DCI-P3 D65 overlaid. https://drive.google.com/open?id=1DSpUzIAgxsiG8qi8FKr2uJ5_P4MNmTKu There are several variations for DIN99 in the DisplayCal ICC Profile Info program, I chose the one that looked the most symmetrical — haha, idiot alert! When I consider MacAdam idea of weighting, DIN99 looks like it preserves some other sort of distance over perceptual distance? But I'm no cartographer any more so than I am a color scientist. I would appreciate hearing any ideas about why this plot is shaped as such. Pls appreciate the beauty of Dell's gamut coverage compared to popular spaces. In native mode, the display can do pre-press and cinema, as well as "sRGB-2020" :)