Please excuse my ignorance, Max, but what's the difference between this type of display narrow primaries and the original 1920's Guild and Wright RGB colorimetry experiments where narrow primaries were also used, as far as observer metamerism is concerned? / Roger -----Original Message----- From: colorsync-users-bounces+graxx=videotron.ca@lists.apple.com [mailto:colorsync-users-bounces+graxx=videotron.ca@lists.apple.com] On Behalf Of Max Derhak Sent: 28 mars 2016 09:56 To: 'colorsync-users?lists. apple. com' List <colorsync-users@lists.apple.com> Subject: RE: Quantum Dot Tech - cheap wide gamut but is it ready for mainstream? One of my concerns with displays having really narrow primaries is that they are subject to much greater observer metamerism (among color normal observers). The problem of measuring for calibration is compounded with the problem of getting observer agreement on appearance. Max Derhak (PhD) Principal Scientist Onyx Graphics Inc.