Wire, My next question is whether those 14-bit LUTs are programmable in any way? Is the Dell version of i1Profiler able to access that part of the monitor's memory during calibration? Are DispCal/Argyll able to access that part of the monitor's memory during calibration? Or is it proprietary? I guess the same can be asked of the NECs and the Eizo's? I confess my ignorance in this matter but it is a fascinating part of these monitor's technologies. Sorry for the model display number in my earlier reply... / Roger -----Original Message----- From: colorsync-users <colorsync-users-bounces+graxx=videotron.ca@lists.apple.com> On Behalf Of Wire ~ via colorsync-users Sent: Tuesday, January 7, 2020 7:20 PM To: 'colorsync-users?lists.apple.com' List <colorsync-users@lists.apple.com> Subject: Re: perceptual differences in Lab deltaE Roger, the UP2516D interfaces are indeed 10 bit with a 14-bit internal LUT. So back to interest in Dell's cal and 3rd party support. Eat that NEC. https://www.displayspecifications.com/en/model/da704af Appears ArgyllCMS has long supported 10-bit graphics. Modern OS will drive it as such, but I'm connecting via DVI-D to HDMI which is limited to 8 bpc. This old NVidia has HDMI and DP so there's a possibility that I can swap to DisplayPort and get 10 bits. Seems unneeded as 8 looks smooth, but a bit here, a bit there, pretty soon you're talking real bits. /wire