Re: Matching Pantone Colors w/HP 5000 and Postershop
Re: Matching Pantone Colors w/HP 5000 and Postershop
- Subject: Re: Matching Pantone Colors w/HP 5000 and Postershop
- From: Graeme Gill <email@hidden>
- Date: Fri, 30 May 2003 11:52:49 +1000
"STANZIONE, JOHN" wrote:
>
The HP 5000 with the PostScript RIP is considered a Pantone-calibrated
>
device. This means that Pantone has supplied HP with visually-calibrated
>
look-up tables for optimum reproduction of PANTONE Colors for Heavy Coated,
>
High Gloss, UV Heavy Coated and UV Vinyl substrates.
>
>
The optimum reproduction of the PANTONE Colors depends on using the HP
>
PostScript RIP. You may visit
>
http://www.pantone.com/support/support.asp?idArticle=135
>
<http://www.pantone.com/support/support.asp?idArticle=135> to download a
>
printable PDF for each of the above substrates. You may also contact HP
>
directly and inquire about the availability of Pantone calibration tables in
>
file formats that can be imported to different application programs.
Of course this is the standard Pantone line. Personally I think it is
all dark-ages-of-color technology (creating named color profiles
in device space, hand matched to a particular example of the plotter,
that is). I'd actually expect better results using a good (possibly
customized to a particular plotter) color profile, combined with a
calibration system, and defining the spot colors spectrally, or
in CIE space (ie. L*a*b*).
The difference comes into stark relief when you realize that the hand
crafted tables are offered for (generally) a very limited number of
paper/ink combinations, limited RIP options, while using the profile
approach lets you get good spot colors with whatever paper/ink combination
you care to profile. It's also worth pondering whether more consistent results
are going to be achieved using a computer (which never gets tired, or
has an "off" day, but consistently applies the color matching and
gamut clipping algorithm to every color, every time), or a process that
relies on a human to do a series of printouts, tweaking the CMYK values
each time, and checking the color match by eye, for thousands of colors,
over and over again.
Graeme Gill.
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