RE: Pantone Nightmares
RE: Pantone Nightmares
- Subject: RE: Pantone Nightmares
- From: Ulf Grossmann <email@hidden>
- Date: Thu, 27 Feb 2003 11:11:28 +0100
Hi All,
here my expected answers,
>
1) You can never get the lab values for Pantone Spot colors
>
without paying a
>
licence fee or hacking them out of another program like
Profilemaker.
That's right, but you can measure from your PANTONE Swatchbook and I
think, that some did this already :-)
>
>
2) You can not trap Pantone names in a PS file becuase your
>
lookup table
>
would have to have the word "Pantone" in the search string - without
a
>
paying a license fee or you will hear from the lawyers.
If your Layout or Designsoftware provides you with PANTONE Colors you
are right, but you are able to define your own colors and this you can
name in your way. If your proofing software is able to read this
"Colorplate" name and match a Value (Lab or CMYK) to this name you
have no problems, but this you als don't have, if you use the original
names.
>
>
3) The Pantones values/names in applications are old or
>
corrupt depending on
>
application version. The odds of getting bad data to start is
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pretty high.
>
The excusse of an update to CTP & 175 lpi is a little fishy.
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Who use more
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Panotne inks, the million speedy printers or the hundred of
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CTP guys? I
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would love to see the math on this one - how much of a
>
benefit is 175lpi vs
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133 lpi - will the higher line screen increase gamut or fill
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some holes in
>
match colors?(Hey Bruce)
no comment :-)
>
>
4) The Pantones Spot color values are static in applications like
>
illustrator. If you specify a Pantone Spot color it will have
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either CMYK or
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RGB values attached that will be used when printing a
>
composite. Well if you
>
change your documents source space the RGB or CMYK values
>
don't change - The
>
data will be flawed from the start. Your rip or printer will
>
get the wrong
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data even if you are printing correctly. Since we have no
>
idea what color
>
space the RGB/CMYK values are based on. And legally you can't
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get the lab
>
values to do the calculation to figure it out.
With PDF/X3 you have also the spotcolor Info inside your composite PDF
and some Application can create files in the same way (inrip
separation).
>
>
5) BestColor has one of the best options, but it requires a little
>
hacking/deception and has one major flaw. The only way that
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Bestcolor can
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trap spot color names is if you print seperations.The problem
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with this idea
>
is that it assumes that you can print seperations from a
>
given application
>
and that all items a seperatable.So if you have a tif in
>
quark it must be
>
CMYK or DCS to seperate.
With Version 4.6.3 we are able to handle CMYK, RGB and Lab Files in
one job (object orinted Color management)with PDF and PS. Only the
Spotcolors are not detected yet and we use the attached CMYK values of
this spotcolors.
But Let's say, we do not sleep.
>
....The problem becomes even more comples when you add
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in Hexachome
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inks or want to use Pantone Spot colors to bump up raster
>
images. I haven't
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use BestColor in a while so -Ulf please confirm this.
The Output Profile describes the Colorgamut of the Inkjet and handles
the Inks. You don't have more problems with Spotcolors than with
normal CMYK. The only reason for problems is, that some Spotcolors are
out of gamut colors and in this case, the color depends on the way of
gamutmapping you setup in your profiles.
>
>
It costs everyone time, money and hassles with clients. From the
small
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speedy printer who just wants to give a customer a proof on
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his desktop
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inkjet for a two color print job, to the major catalog house
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who is forced
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to do and extra print run or show his client a chip from a
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swatch book, and
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major rip developers who just want to give customers a good
>
product Anyone
>
of us can make up a bunch of colors.
With ProPack 1 of Version 4.6.3 from Best Colorproof we implement a
better calculation for Duplex or Spotcolors together with CMYK.
(prints now lighter in saturated areas)
Best regards
Ulf Grossmann
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