Re: Fully saturated colors - mis mapped?
Re: Fully saturated colors - mis mapped?
- Subject: Re: Fully saturated colors - mis mapped?
- From: email@hidden
- Date: Tue, 12 Jun 2001 11:29:25 EDT
In a message dated 6/12/01 10:01:43 AM, email@hidden writes:
>
everything looks great EXCEPT the satruated patched which get pushed to
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values of 255,80,70 as an example. When that goes to the printer, my
formerly
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brilliant Fuji red goes to a muddy yech red-orange.
>
>
Now check me on this. If I'm working in AdobeRGB (big gamut) and create
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a color on the outer edge of the gamut (a fully saturated red, for example)
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shouldn't that color map through a profile to the outer edge of the
destination
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gamut? IOW, If I start with AdobeRGB 255,0,0 shouldn't I end up with
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Fuji 255,0,0? If I don't then I can't use the full gamut of the Fuji when
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printing.
This cross pollution is needed to some degree simply because the red in
AdobeRGB is not the same color as the red in the Fuji or the HP. But looking
at one of my own RGB profiles for a Fuji Frontier (I do't happen to have a
Pictrography profile here) I find that my greatest cross value is about 36
(most are below 10), and only in a second channel, where it will move the
color sideways, not both the second and third channels where it would simply
dull it down. You may have used some kind of press emulation setting when
printing your target or file, or in some other way accidientally limited your
gamut, or your profiling software might simply not be able to profile this
type of RGB device with high saturation. The HP2500CP will take CMYK
profiles, and the resulting numbers will be based on ink limits and other
factors, complicating matters.
The bottom line is that with the proper software and settings you should be
able to get highly saturated vector colors as well as good photo colors; but
not every program does this well.
C. David Tobie
Design Cooperative
email@hidden