- This topic has 30 replies, 7 voices, and was last updated 6 years, 9 months ago by
.
-
Posts
-
If I indeed see a 3×3 transformation matrix, does it mean that proper evaluation of SpectraView II’s calibration accuracy requires the ICC profile it generated to be loaded, and therefore, I will not be able to assess its sRGB coverage through DisplayCAL’s profiling tool?
Both of this can be done. You already checked the sRGB coverage.
How is sRGB coverage calculated in DisplayCAL/ArgyllCMS? Is it dependent solely on the R, G and B primaries (measured during profiling and embedded in the ICC profile)?
I just find it hard to accept that my low-end US$100 monitor could get 99% sRGB coverage when calibrated and profiled using DisplayCAL, while my Spectraview-calibrated NEC PA271W can only emulate 96.3% of sRGB.
The reason why the coverage is only 96.3% is that Spectraview does not calibrate the primaries. Instead, one can either choose to use a) factory measurements (true sRGB primaries in ICC profile, but the monitor’s have actually drifted already over time) or b) calibration sensor measurements (primaries not exact, but at least reflected faithfully in ICC profile).
Source: https://www.dpreview.com/forums/thread/3024764
Just for the record, was able to improve the coverage to 98.3% by fixing the primaries.
