I finally managed to do measurements of my 2019 iMac screen with a i1 Display colorimeter and DisplayCAL software.
Are the results I obtained after calibration.
I wonder if they are within specs :
Max brightness : 430 nits
Contrast Ratio : 860:1
Gamut coverage :
99.7% sRGB
85.1% Adobe RGB
98.6% DCI P3
Gamut volume :
147.4% sRGB
101.5% Adobe RGB
104.4% DCI P3
Are the results I obtained after calibration.
I wonder if they are within specs :
Max brightness : 430 nits
Contrast Ratio : 860:1
Gamut coverage :
99.7% sRGB
85.1% Adobe RGB
98.6% DCI P3
Gamut volume :
147.4% sRGB
101.5% Adobe RGB
104.4% DCI P3