Having updated the printer driver for my  Canon Pro 9500 I decided to regenerate the custom printer profiles using Profile Prism.

Out of curiosity I decided to compare the 3D visualizations of the PP profile compared to the corresponding Ilford Paper profile (for the specific paper and printer), and also with the nearest Canon generated  paper/printer profile. Interestingly the PP colour space "width" is significantly less than the other two, but is smoother (less angular).
 
I wasn't expecting such a "width" difference.

Last year when I first generated the particular paper's profile  using PP I preferred the PP profile printed output over the equivalent Ilford. I expect that the preference remains.

Any comment or explanation would be appreciated.

PETER


 

   

Thanks Mike. Here's a typical example relating to Ilford Fine Art paper:



The blue outline represents the PP profile and the red, the Ilford version.

And an example relating to Ilford Gold Fibre Silk paper:



The pink outline represents the PP profile and the green, the Ilford version.

Does the "icc" versus "icm" make a difference?

Incidentally, the PP reports from the scanning of reference and target are very good.

PETER

Could be just a little bit of "artificial" stretch that is being done by other software to accommodate images with a large gamut.  Sounds like cheating but if you know how the innards of profiles and color management models work, it's all a bit arbitrary.  The important thing is that in gamut colors are mapped properly so that people don't notice hue shifts or contrast problems.  Other than that, as you've seen, two profiles of different sizes can look pretty similar.

Mike