Andrew and Roger, Just to confuse, er, clarify things a bit more, here is what I gathered many months ago when looking for answers about "DCI P3" and which I wrote in one of my help manuals. -------------------------------------------- DCI P3 Theater The Digital Cinema Initiatives (DCI) is an entity created by motion picture studios whose purpose is to define specifications for Digital Cinema (Ref. 61). The DCI P3 RGB space has a gamut somewhat similar in gamut and primaries locations to the Adobe (1998) RGB space. There are two versions of this space which differ in their Illuminant; the DCI P3 Theater RGB space Illuminant has a Correlated Color Temperature (CCT) of 6300 K (expressed as 6300 K *) while the DCI P3 D65 RGB space has a D65 Illuminant. Both spaces are defined with a simple software-encoding (i.e. equation based) gamma of 2,6. There is also a variant of this space defined by Apple, called Display P3, which has a D65 Illuminant but with the gamma of the sRGB space. -------------------------------------------- Display P3 Defined by Apple, Display P3 has the same primaries as the DCI P3 Theater and DCI P3 D65 RGB spaces. It is defined with a D65 Illuminant (same as for DCI P3 D65) but its gamma is the detailed gamma defined for sRGB. This space has been used by Apple in some of its wide gamut displays. It is interesting to note that Apple selected the DCI primaries instead of the Adobe (1998) RGB primaries which have been used by other display manufacturers in order to bring their display closer to the specifications of Digital Cinema. However, because of its use of the sRGB detailed gamma, some conversion is nonetheless required if DCI P3 values are required. -------------------------------------------- I did not check recently if the Apple numbers have changed but I noticed they call their wide gamut displays "Wide color (P3)" for marleting purposes. Danny Pascale www.babelcolor.com On Tue, 3 Dec 2019 14:20:24 -0700, Andrew Rodney via colorsync-users <colorsync-users@lists.apple.com> wrote: (...)snip DCI-P3 is a newer proposed color space I believe, and based on Apple's users, and the fact the 'other' color space has 'Adobe' in the name, aimed for a different target (which isn't really that much of a difference). Andrew Rodney http://www.digitaldog.net/ > On Dec 3, 2019, at 1:58 PM, Roger Breton via colorsync-users wrote: > > Finally had the chance of measuring the primaries on an iMac 27" 5K Retina > (latest INTEL Corei9 processor, 1TB SSD, the works). The numbers don't lie, > Apple is on the side of "P3", voluntarily distancing themselves from Adobe, _______________________________________________