Re: RGB working space in PS
Re: RGB working space in PS
- Subject: Re: RGB working space in PS
- From: Henrik Holmegaard <email@hidden>
- Date: Wed, 20 Feb 2002 09:20:02 +0100
Todd Emory <email@hidden> wrote:
I'm considering Adobe98, but I have had other people tell me ColorMatch
is better. Opinions???
You must have the colors on the input side which you wish to print on
the output size. ColorMatch doesn't support colors which are
printable on standard digital printing systems.
ColorMatch is the size of a physically measured monitor space. A
space this size can't supply the colors that you can print on an HP
5000PS with CcMmYK inks and bright white Sihl 3909 / MPA J35 paper.
For instance, printable saturated blues and cyans aren't supported.
Look up the CHROMiX ColorThink 2beta20 QuickTime screenshots in the
'Monitors' chapter of the soft-proofing cookbook on the ColorSync
home page.
Use an RGB working space such as Adobe RGB (1998) or better still
eciRGB10. The reason eciRGB10 is preferable is that you can load that
in ALL the tools from Adobe and know that you can define Y 100% on
the press. This you cannot do with Adobe RGB (1998) which in other
words doesn't function as a universal 'RGB PCS'. The eciRGB10 space
was specifically developed to support the largest ISO offset space.
Because eciRGB10 is D50 and not D65 like Adobe RGB (1998), it is not
possible to convert RGB into CMYK with the effect that the blue white
point is proofed in the separation. This effect is also shown in the
color cookbook.
You can pick up eciRGB10 on
http://www.eci.org see 'Profiles'. The
space was developed by Karl Koch of Color Solutions. Anybody can
recreate it anywhere because the Pshop settings required to do so are
in the download documentation.
Hope this helps.
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