Re: Rel vs Abs proofs
Re: Rel vs Abs proofs
- Subject: Re: Rel vs Abs proofs
- From: Roger Breton <email@hidden>
- Date: Sat, 14 Oct 2006 14:23:45 -0400
Terry,
> I've been looking into this myself and there seems to be some discrepancy
> between the paper white LAB in the new SWOP2006 data sets vs. the published
> values in ISO 12747-2:2004. The SWOP2006 values are as Mike reports. The ISO
> values are:
>
> Paper Type 3: L*92 a*0 b*+5
> Paper Type 5: L*90 a*0 b*+9
> (These are the values reported as measured on white backing per CGATS.5.
> Interestingly, the "official" values measured on black backing show a 2-5 drop
> in L* but a DECREASE in the b* component (less yellow) by 2-3).
>
> Terry
I don't remember what ISO Paper Type 5 stands for but with a b* of +9 is
yellow like hell. Who would want to print on that?
Roger Breton | Laval, Canada | email@hidden
http://pages.infinit.net/graxx
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