Re: BEST v5 and others
Re: BEST v5 and others
- Subject: Re: BEST v5 and others
- From: Henrik Holmegaard <email@hidden>
- Date: Wed, 15 Oct 2003 14:21:34 +0200
Dennis Dunbar <email@hidden> writes:
>The difficulty is also that a great deal of the time the images that
we create are going to be re-purposed
>and or sent to undetermined printers.
A fifth repurposing rendering intent, aka RC with BPC, is a concept to
be considered for adjusting the dynamic range of CMYK in repurposing
contexts.
>But as many of you know so well there are subjective decisions to be
made regarding which method of CMYK
>conversion looks best: which rendering intent?, how much GCR?, what to
do about out of gamut colors?, etc.
>Many photographers and artists are not completely comfortable leaving
these decisions totally up to the
>prepress/printer operator. And many times the client just says "give
me CMYK".
For each characterization table the ink limit has to stay steady or the
dynamic range goes south, but the black generation may be varied as may
the gamut mapping style. Black generation should be independent of
gamut mapping style, that is, you should get the same color style
whichever black generation you choose.
The good thing about PDF/X-3 is that it the content creator has a say
over the gamut mapping style, because it is locked into the
OutputIntent profile that is embedded in the PDF document itself. This
is a break both with the PostScript and ICC framework as neither
conceived of embedding the space to be converted into, only the space
to be converted from.
There are still plenty of things that can go wrong, but they are
nowhere near the situation in the past when trans-national printing
organizations here in Europe sent out data to fifteen or twenty sites
and got fifteen or twenty quite different proofs back. This type of
situation has gone for good with the spectro, the color managed control
strip or chart, and PDF/X-3 enabled RIPs and color servers.
Thanks,
Henrik
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