Re: Substrate Relativity Calculator
Re: Substrate Relativity Calculator
- Subject: Re: Substrate Relativity Calculator
- From: Elie Khoury <email@hidden>
- Date: Thu, 18 Oct 2012 04:30:42 +0200
Mike,
We have now a method to adjust data sets and take into account actual paper color vs reference data set paper color.
I encourage you to use this method named "Substrate Corrected Colorimetric Aims (SCCA), validated by Prof. Chung from RIT, and recognized in CGATS 021 and ISO 15339 drafts.
Once your data set is adjusted using the actual paper color, you can build your new ICC profile.
Kind Regards,
Elie Khoury
--------------
On Oct 17, 2012, at 19:39 , Mike Stewart wrote:
> With papers changing the way they are; most do not fall within the
> tolerances specified in 12647-2. I like this idea of the Substrate
> Calculator. My question is this. Let's say we proof to GRACoL tolerances
> on a paper that is within the specification. We now get a #1 or #2 paper
> that is out of spec. I use the calculator, create a new CGATS file and
> create a new ICC Profile. I use CGS ORIS Color Tuner and hone in my
> proofing device (Indigo press) to within tolerance and proof my
> files/images on the "new" paper. What have I achieved. I have created a
> proof that the printer may have an easier time "matching"; but can I say
> that this proof adheres to GRACoL specifications? If you were to read the
> 12647 color bar it would pass only if I have the proper dataset loaded to
> compare to using software such as ORIS Certified Proof. Someone else
> checking my proof to GRACoL would say it "fails" because they would be
> comparing to the "original GRACoL". What exactly have I accomplished and
> how can it be classified as a specification.
>
> Mike Stewart
>
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