Re: cloning the separation from a CMYK scanner
Re: cloning the separation from a CMYK scanner
- Subject: Re: cloning the separation from a CMYK scanner
- From: rfranklin <email@hidden>
- Date: Fri, 08 Jun 2001 08:56:45 -0400
On 6/7/01 10:51 AM, "Roberto Michelena" <email@hidden> wrote:
>
Somewhat I have the impression this can be done. There's a certain
>
scanner that only scans in CMYK or in a non-specified RGB (limitation of
>
it's software). The user is enormously accustomed (and pleased) with it's
>
separation tables/algorithms.
>
>
Basically, that's his company's "color flavour" so to say, in that the
>
"look" has to be mantained between the previously scanned transparencies
>
and the new ones.
>
>
So I'd like to make an output CMYK profile that matches as close as
>
possible the separation/colors from his old scanner.
>
How is this accomplished?
>
>
Or is there another way? there ought to be...
Are you trying to color manage the device, or color correct the scans using
a profile? (first option is what you want to do, second is what people seem
to ask for) You might actually be better off dialing in the scanner to what
you want it to give you. When we did this kind of thing it was by
"tweaking" the profiles in ColorBlind until we got the desired result, but
image content is going to make that better or worse depending on the scan.
I don't believe there's a "one size fits all" solution to this. Unless
there's a specific correction that would apply to all scans, I don't think
you're going to be satisfied with the result.
I did something a little similar that might give you an idea or two. It
worked, but was fairly involved. The issue I dealt with was with MS word
(RGB) documents printing to a Chromapress where colors would become a
brownish-yellowish smear - there was no way to get a useful target out of
the press to measure in order to build a proper profile. Don't know whether
I'd want to attempt this between two scanners though.
I needed to reverse engineer a few of the processes in order to get a
reference file, and then profiles that would give the result I was looking
for. Using a normal CMYK target on the press, the reference values I needed
could be measured and built into an RGB target that could be used to
translate the MS Word colors into a device CMYK for the Chromapress print
profile. If I read your post correctly, you'd be going for a device CMYK
for the first scanner.