Hi all! Does anyone know of any RGB color space whose chromaticities were measured using the CIE 1964 10 degree standard observer? I'm researching this list: ACES2065-1 ACEScc ACEScct ACEScg ACESproxy ARRI Wide Gamut 3 ARRI Wide Gamut 4 Adobe RGB (1998) Adobe Wide Gamut RGB Apple RGB Best RGB Beta RGB Blackmagic Wide Gamut CIE RGB Cinema Gamut ColorMatch RGB DCDM XYZ DCI-P3 DCI-P3-P DJI D-Gamut DRAGONcolor DRAGONcolor2 DaVinci Wide Gamut Display P3 Don RGB 4 EBU Tech. 3213-E ECI RGB v2 ERIMM RGB Ekta Space PS 5 F-Gamut FilmLight E-Gamut ITU-R BT.2020 ITU-R BT.470 - 525 ITU-R BT.470 - 625 ITU-R BT.709 ITU-T H.273 - 22 Unspecified ITU-T H.273 - Generic Film Max RGB N-Gamut NTSC (1953) NTSC (1987) P3-D65 Pal/Secam ProPhoto RGB Protune Native REDWideGamutRGB REDcolor REDcolor2 REDcolor3 REDcolor4 RIMM RGB ROMM RGB Russell RGB S-Gamut S-Gamut3 S-Gamut3.Cine SMPTE 240M SMPTE C Sharp RGB V-Gamut Venice S-Gamut3 Venice S-Gamut3.Cine Xtreme RGB sRGB I suspect that if any of these do, it might be the ACES or other cinema spaces. My understanding, however, is that VFX/cinema standardizes on the 1931 2 degree. Outside of RGB, presumably all the major CIE device-independent spaces allow both. But if anyone knows of any other spaces that use the 1964 observer, I would love to know! I am also curious why we are not turning to the CIE 2015 revisions to the SOs. I don't see anyone using them anywhere. Thank you! Very best, Jeff Jeff Nova Chief Executive Officer Colorhythm https://colorhythm.com Mobile: +1 510-710-9590 Main: +1 415-399-9921