Re: BEST v5
Re: BEST v5
- Subject: Re: BEST v5
- From: Ulf Großmann <email@hidden>
- Date: Wed, 08 Oct 2003 09:23:59 +0200
Hi Greame,
I think many of you know me as one of the responsible persons for color
management in Best, but I'm not anymore employee from Best and so I think I
can be objectiv.
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Doesn't look like much from my perspective [Which, admittedly, is that
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of a competitor]. We've benchmarked CPSI vs. JAWS for instance in the past,
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and CPSI was 2 to 3 x slower, so I doubt that moving to CPSI will do much
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for BestColors performance (although I don't know how Ghostscript compares
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to JAWS, speed wise).
I think speed isn't any more a question of the RIP, it is much more
depending on the speed of the output device and I havN#t seen any RIP since
many years which couldn't calculate faster as the printer can print.
Otherwise, during the last Proofing shootout in Germany (2 weeks ago) the
Best RIP Version 5 was one of the fastes Proofing RIPs in the test.
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I guess for some people, being "the real thing" will
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appeal, although I have doubts (based on past experience) about Adobes
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commitment to CPSI.
Moving to CPSI is one big step from Best, because this solves many problems
in future workflows with PDF. Many things are fixed now like the overprint
function in composite.
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Moving from process to CIE measurements for calibration
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also seems like a leap backwards. Density measurements are specifically
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designed to be narrow band process controls, ideal for calibration. CIE
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measurements are very broad band, and mean that you can't separate out
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the individual channels behaviour very well if colorants are mixed, and
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give you a poorer signal to noise ratio (higher measurement uncertainty)
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when measuring individual colorants. From what I've seen, the EFI-CMM is
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OK, but nothing to write home about.
You are right, if we talk about "linear colors" which are inside the ISO
specs, but many Inkjet colors are far away from this specs and they are not
linear colorwise. In the past you had problems with the gray balance, which
turns from neutral to red or green to neutral with inkjets. This is a
problem of how far away the color is from the filter of the densitometer and
this changes extremly with inkjet colors if you print scales. With the new
technology each step is calculated separatly to get a gray which has the HUE
of the 100% gray.
I saw first results and it isn't perfect (this I think is more a problem of
metamerism, because this changes from Ink to Ink), but 200% better than
everything I saw before.
My opinion is, Best did the right step to be prepared for the future and I
look forwared what they want offer us next year :-)
Ulf Grossmann
Color Consultant of Media-Manager GmbH
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| | >Re: BEST v5 (From: Graeme Gill <email@hidden>) |