Re: CMYK converter
Re: CMYK converter
- Subject: Re: CMYK converter
- From: Marco Ugolini <email@hidden>
- Date: Sat, 24 Apr 2010 18:36:52 -0700
- Thread-topic: CMYK converter
In a message dated 4/24/10 5:49 PM, Terry Wyse wrote:
> I'll throw my penny's worth in.
>
> Why not SWOP2006_Coated3 as "standard" separation profile? It represents a
> rather "gender-neutral" print condition that is perfect as a publication
> profile. Paper white of this profile is a neither too-bright/too-dark nor
> too-yellow/too-blue L*a*b* value of L92.5 a0 b0.
>
> While GRACoL Coated1 might too far on the commercial side, SWOP_Coated5
> represents a printing condition and paper white (L90 a0 b+4) that is only used
> by "down and dirty" catalog printers that I find not very typical. SWOP
> Coated3 represents a nice middle ground that I think is more typical of web
> offset printing today than either US Web Coated (SWOP) v2 or SWOP Coated5. It
> might be the ideal "Generic" CMYK profile.
Hi Terry.
Worth a thought, certainly.
But I'll play devil's advocate for a second, if I may.
Compared to SWOP_Coated3, GRACoL's SWOP_Coated5 produces an overall closer
colorimetric match to the print conditions listed in US Web Coated (SWOP)
v2, including their respective white points (L90.4 a0 b4.1 in the former,
L88.7 a-0.25 b3.64 in the latter, a difference of 1.2 DeltaE 2000).
The two sets of primaries, overprints and CMY black all compare to one
another within less than 1 DeltaE 2000, except for the yellows, which are
apart by 1.01 DeltaE 2000.
If print conditions close to the ones specified in US Web Coated (SWOP) v2
(including the paper stock) are still prevalent in North America, specially
among the "only-one-CMYK" set, then it would seems to me that SWOP_Coated5
may be a "safer" choice than SWOP_Coated3 -- which latter one, among other
differences, has a paper white that deviates from that of SWOP v2 by as much
as 4.3 DeltaE 2000.
Any thoughts on this?
Marco Ugolini
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