Re: PSO Coated v3 separations
Re: PSO Coated v3 separations
- Subject: Re: PSO Coated v3 separations
- From: Andreas Kraushaar <email@hidden>
- Date: Wed, 22 Aug 2018 22:00:41 +0200
Hi Martin, all,
this is a „problem“ or a „feature" with ICC based white point scaling (required
for colorimetrical encoding of data). Rendering neutrals from ab=0,0 to ab=2,5
-10 is quite a change and XYZ-scaling from black to white does not reflect the
required XYZ to be printed to actually get a decent print. The solution would
be to use a perceptual rendering intent that does a grey mapping close to
ab=0,0 and not to what XYZ scaling predicts.
I know many color server device link profiles (F39 - F52 and also ECI-RGB to
F52) that does this job.
regards
Andy Kraushaar
PS: So please believe me that the people that doing this huge (unpaid) efforts
also do check the separation, yes!
Wir stellen den Hintergrund in den Vordergrund.
We put the background in the foreground.
—————————————————————————
Dr.-Ing. Andreas Kraushaar
Abt. Vorstufentechnik
Fogra
Forschungsinstitut für Medientechnologien e.V.
Einsteinring 1a
85609 Aschheim b. München
Telefon: +49 89. 431 82 - 335
Telefax: +49 89. 431 82 - 100
E-mail: email@hidden
Internet: www.fogra.org
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> Am 21.08.2018 um 23:49 schrieb Martin Orpen <email@hidden>:
>
> Is it just me that thinks that FOGRA51 produces inferior separations and
> unacceptable skin colour?
>
> Just like FOGRA52 we get separations that lack yellow when we need MORE
> yellow to create an acceptable skin colour.
>
> Who makes the decisions about colour reproduction for these standards?
>
> Have they proofed and printed the BVDM Roman 16 images with the Green and
> Blue backgrounds?
>
> Did they honestly believe that skin the colour of boiled ham was acceptable?
>
> This causes a lot of problems in pre-press workflows because clients
> supplying Photoshop CMYK end up with terrible looking images and any that we
> edit using commercial separation software (that corrects the yellow
> deficiency) look nothing like the images in the rest of the job.
>
> This wasn’t the case with FOGRA39.
>
> The new standards are producing substandard results :(
>
> --
> Martin Orpen
> Idea Digital Imaging Ltd _______________________________________________
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