I have been digging into some of the icc white papers on www.color.org
<http://www.color.org/> trying to understand a bit deeper what’s happening
under the hood with display profile behaviour and soft-proofing. I would
appreciate a bit of help to confirm if I’m understanding correctly or not.
As far as I understand (at least in v2 icc profiles), with display profiles and
how they’re used in CMM’s (I’m using apple, so colorsync) — display profiles
don’t include data on the actual brightness/intensity of the white point, or
the darkness of the black point?
If I understand that correctly then, the CMM will assign 100% brightness (100%
L* in Lab, or equivalent Y in XYZ) to RGB 100%,100%,100%, and 0% L* (or
equivalent Y in XYZ) to RGB 0,0,0?
I’m guessing that happens regardless of how bright the black point actually is
(ie. due to backlight leakage and flare, black on the monitor will be brighter
than absolute black)? So essentially it’s functioning similarly to Black Point
Compensation with Relative Intent on a print, by mapping absolute 0 to the
darkest black available?
My next query is regarding what’s happening under the hood with soft-proofing
in Photoshop and similar applications when selecting “simulate paper color /
I’ve read somewhere that Photoshop is effectively (for display purposes only)
converting the image to the printer profile (using whichever rendering intent
was selected), then converting back using absolute rendering intent.
The idea of doing this would be to map the white and black points to their
actual reflectivity in the PCS, and then to display that through the screen
using the display profile.
Is my understanding of both of these points correct?
I appreciate your input!