Re: Proof validation software
Re: Proof validation software
- Subject: Re: Proof validation software
- From: Jim Rich <email@hidden>
- Date: Sat, 21 Jun 2003 11:13:06 -0400
Roger stated:
I think what you describe would only make sense in the context of 'chemical
>
proofs' like Polaproofs, Matchprints, ColorArts or Cromalins. In the case of
>
inkjets proofs, those 'process-oriented' parameters would be meaningless as
>
these type of proofs extensively make use of metamerim to create appearance
>
matches, thereby defeating any densitometric-based analysis.
>
Roger,
You are so right about trying to use density and dot values to compare and
control inkjet proofs. But the nice thing about tools like Proof Check and
ColorMetrix is that you can use device independent color spaces like LCH or
Lab to compare the consistency of image areas such as 3 color trapping,
gray balance, tints and solids. Once you learn and then know what those area
measure say in LCH you then know if the proof is consistent.
What is also interesting about tools like Proof Check and ColorMetrix is
that they let you use statistics to show trends if your proofs are in or out
of tolerance. This can work with any type of proof that is made in-house or
is supplied. Then you can predict if your proofs are within an acceptable
tolerance, if your proofs are getting ready to move outside of acceptable
tolerances or if they are bad from the get go.
These types of tools allow all levels of end-users to do all of this
measuring and checking tolerances in minutes once they are set up.
My .02.
Jim Rich
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