Hi Michael
Fogra would measure against the Mcheck.it8 values for the reference condition to certify a
proof. This would correspond to the characterization data in your case L 90.65 a -0.09 b
3.16.
In some integrated verification tools however the measurement is automatically compared to
the icc profile in the relevant workflow.
I checked both the characterization data and ICC profile I have for PSRgravureLWC and do
not see the paper white differences you see. In my case they are the same, only a very
small rounding difference from the software.
So my question would be how are you reading this paper white point in the ICC profile (
what software etc) and is there a chance this profiles white point has been edited in your
case.
If you like you can send me the profile to compare as I am not aware this difference
exists. If it does I too would like to know more.
Sincerely
John Panton
EFI/Fogra cert
Digital Distributors
Cape Town
----- Original Message -----
From: "Michael van den Heerik" <mvdheerik(a)jupiterct.co.za>
To: <eci-en(a)lists.callassoftware.com>
Sent: Wednesday, September 26, 2007 5:34 PM
Subject: [ECI-EN] PSRgravureLWC_ECI2002 paper white lab
Hi,
Can someone explain to me why the characterization data and the ICC profile for
PSRgravureLWC have different paper whites?
ICC profile c0m0y0k0 = L 90.28 a -0.60 b 2.62
PSRgravureLWC_ECI2002 c0moyoko = L 90.65 a -0.09 b 3.16
What should be the correct target value for spectrometer certification?
Thanks,
Michael van den Heerik
TJDR Cape Town
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