|
Hi,
There is a way to check (perceptually) how well
performs monitor profile. You will need a printout of
any image with embedded profile. Obviously an
accurate print, I mean :-)
In the profiler, open the image and press the
triangle on upper left of the window. Then, in bottom, set the
combo box to "absolute colorimetric". If all is ok,
you will get a match-to-screen proof of printout
as viewed under D50 illuminant.
If the image was printed using right profiles, colors
inside monitor
gamut should look pretty same.
Regards,
Marti.
----- Original Message -----
Sent: Monday, January 26, 2004 1:33
AM
Subject: [Lcms-user] Re: Bug in Eye One
Match?!?!
I suspect that soft proofing to the i1 profiles
are also not working, even when using relative intent. I do this to see
whether
the image contains colours which are out of gamut
of my monitor, on occasion:
I did the following:
- Profile/calibrate monitor to D65 using
Eye One Display.
- Profile the monitor in the same calibration state
with the Little CMS
beta 3 monitor profiler, using the Eye One Display
puck.
- Open Photoshop 7.01, and create a blue patch (0,0,255) and
assign
ColorMatch RGB.
- View | Proof Setup | Custom, proofing
profile the i1 profile, intent
relative, blackpoint compensation off
-
View | Gamut warning (enable). Observe that image is out of gamut.
- Image
| Adjust | Hue Saturation, adjust saturation until gamut
warning
disappears. Adjust value required: -41%
- Cancel out of the hue/adjustment dialog (reset the image to
0,0.255)
Repeat these four steps, using the Little CMS profile:
Hue adjustment
required: -11%
Repat these steps using sRGB: Hue
adjustment required: -15%
I have trouble believing that the gamut
warning for the i1 profile
represents reality.
For the time being I really think I'm better off
just using the Little CMS profiler, at least until
I understand more about these i1 profiles.
Greg.
| 