Re: Editing profiles [was New EyeOne ruler and soft case]
Re: Editing profiles [was New EyeOne ruler and soft case]
- Subject: Re: Editing profiles [was New EyeOne ruler and soft case]
- From: Ernst Dinkla <email@hidden>
- Date: Thu, 03 Nov 2005 19:53:09 +0100
-------- Original Message --------
Subject: Re: Editing profiles [was New EyeOne ruler and soft case]
Date: Thu, 03 Nov 2005 19:45:02 +0100
From: Ernst Dinkla <email@hidden>
To: Bob Frost <email@hidden>
References: <BF8E9DC4.E6B6%email@hidden>
<email@hidden>
<003b01c5e08c$69984fc0$0201a8c0@home3>
Bob Frost wrote:
Having read various tomes written by authors who inhabit this list, I
thought profile editing was essential. My take on what I had read was
that since it is currently impossible to make one profile that perfectly
covers the entire gamut, we should edit a profile to make it specific
for various color ranges that one might be particularly interested in.
For instance with an image where the greens must be spot on, we edit our
profile to give perfect greens; if we want a 'blues' profile, we edit to
give perfect blues, etc, etc. So what one needed was a collection of
edited profiles for specific purposes. But I may have misinterpreted
their advice.
Looks like a creative interpretation of profile creation and
editing.
Some years ago I suggested that what we needed was a profiling program
that did the usual - print target, read target, make profile, but then
went one (or many) steps further. Print the target again, using the new
profile, read it and let the program see where it went wrong first time,
and then correct itself. You could do several iterations of print new
target with latest profile, and correct it, each time getting closer to
perfection.
I was told at the time that this was not possible, or if it was, it
would be far too expensive, but I still don't see why.
Roger Breton has written about the iterative profiling he has
done. Print Open V5. So it exists in profiling software. The
main problem could be that the fluctuations in printer output
are higher than the precision you try to create with the
iterations. And the method of measurements has to be very
consistent too. The only answer then is more averaging: more
target prints, more readings. It gets as slow as building a
pyramid and in the end you still have the inconsistency of the
printer.
--
Ernst Dinkla
www.pigment-print.com
( unvollendet )
--
--
Ernst Dinkla
www.pigment-print.com
( unvollendet )
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