Re: Creating a profile with eSprint on HP.
Re: Creating a profile with eSprint on HP.
- Subject: Re: Creating a profile with eSprint on HP.
- From: Henrik Holmegaard <email@hidden>
- Date: Thu, 05 Sep 2002 13:33:44 +0200
Roger Breton <email@hidden> wrote:
>
And say that in their new "Heidelberg RIP" they have the same dismal
>
controls their other mac-based RIP ships with? Wake up HP! I mean for the
>
extra amount of money one would pay for this "hot" RIP that runs under Win2k
>
they have not eve bothered to include any linearization / calibration
>
functions beyond what they ship on the Mac!
I guess it depends on where you are coming from.
The 5000ps and the 50ps are examples of RIPs with prebuilt linearizations
and Pantone tables for supported media, and I might use these printing
systems as is.
Or I might add third party media in which case I might build my own profiles
and Pantone tables using a spectro, print profiling software, and Lab-based
PMS specifications.
There are more media for the 5000ps than for the 50ps, and the 50ps is a
software RIP with an ICC frontend where the 5000ps is a hardware RIP with no
ICC frontend.
MPA in Switzerland offer the same MPA J35 for the 50ps as for the 5000ps.
Kodak Polychrome (previously Imation) offer the Design Base and Commercial
Base papers. Tecco / BEST offers quite a number of papers.
Using third party papers on the 50ps is like using third party papers on the
5000ps, pick an internal linearization table, linearize, print the test
chart with color management off (whether CIEBased in the 5000ps or ICC in
the 50ps), dry and measure.
One aspect of precision in proofing is iteration versus interpolation which
again depends on which RIP is hooked up to the same printer hardware. For
instance, the GMG proofing RIP uses iterative measurements from e.g. the
GretagMacbeth iCColor to narrow the fit between the simulation space and the
destination space in a type of device link (except the two color spaces are
lined via Lab), and BESTColor uses device profiles where the ability of the
simulation space to 'see' the destination space and vice versa does not
exist. So in using device profiles it may help to turn to a large test chart
like the ECI 2002 which records the behaviour of the system in detail,
choose large profile size for highest LUT resolution in both the simulation
and destination profile, and use profiles which in the proofing conversion
don't smooth data curves as ProfileMaker does not.
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