Re: PSO Coated v3 separations
Re: PSO Coated v3 separations
- Subject: Re: PSO Coated v3 separations
- From: Refik Telhan <email@hidden>
- Date: Tue, 28 Aug 2018 18:09:10 +0300
- Thread-topic: PSO Coated v3 separations
Hi Jan-Peter,
Can you elaborate on what you refer as the "proper color server"? From the look
of things, we have to say goodbye to Adobe Photoshop as a conversion and soft
proofing tool.
What additional functionality in a color server makes it a proper conversion
tool?
Regards,
Refik Telhan
On 26.08.2018 22:22, "colorsync-users on behalf of Jan-Peter Homann"
<colorsync-users-bounces+rtelhan=email@hidden on behalf of
email@hidden> wrote:
Hi to all,
With the introdcution of the M1 measurement condition and corresponding
lightning for the light booth at the press and for proofs, we are
running in strong shift for graphics arts color management with standard
ICC profiles.
The range of paper colors for different paper types expanded massive
into the blueish area because of higher activation of optical
brighteners in differnt papers.
Before M1, the range of paper white for the standard profiles provided
both by FOGRA and GRACoL has been from b* -2 to b*1 for the majority of
papers.
Especially for for FOGRA39 acting as an standard profile - but also for
most other profiles, users got an acceptable match from monitor to proof
to press (old lightning), when seperation in Photoshop / InDesign is
relative colorimetric with BPC, no paper simulation for softproofing and
a proof on a FOGRA39 compatible proof media.
This colormanagement workflow - which still satisfied majority of users
- is history (looking from a standards perspective). A separation with
Relcol +BPC with FOGRA51 does not deliver a proper match RGB-image -
CMYK image - proof on FOGRA51 "compliant" proof media.
There are solution using perceptual colormatching, paperwhite simulation
on in Photoshop and lightbooth for proofs with new reference lightning.
But these are mor for specialists and for the broad majority of users...
Currently, the standards community (FOGRA, ECI, Idealliance etc. ...)
has not convinced both the majority of its users base as also Adobe to
replace FOGRA39 with FOGRA51 as a standard color setting in Adobe CC.
I still doubt, that this makes sense. We may should promote still
FOGRA39 (or similar) as an standard color setting and exchange space for
the majority of graphic arts users and color servers at the printing
house for optimization according the papertype / printing standard.
(This includes both PDF/X-4 wuth RGB images and FOGRA39 output intent or
FOGRA39 CMYKonly data...)
We also should consider, that the majority of print jobs is printed
without proofs today.
If standard users would send FOGRA39 data and asks for a proof on coated
paper, his data would be converted to FOGRA51 with a proper color server
and he would get a FOGRA51 proof.
If a user still wants to work directly in FOGRA51, the standard
community should inform these users, that they should not use their
color setting standard setting RelCol+BPC and that they should work on
the level of prepress specialist concerning monitor calibration and
proofing. If not, they should deliver FOGRA39 and let the printer or the
prepress specialist do the job.
Regards
Jan-Peter
Am 24.08.2018 um 11:05 schrieb Martin Orpen:
>> On 24 Aug 2018, at 07:28, Andreas Kraushaar <email@hidden> wrote:
>>
>> if you are close to Munich I invite you to see that what you (can) see
on screen is what you get on print. Softproofing is working (both for F39 and
F51).
>
> You don’t need to travel further than your screen.
>
> Open the BVDM Roman16 image with the blue background.
>
> We don’t want more magenta than yellow in her skin — you don’t get that
in 39 — but that’s what you get with 51… and then expect it to print well on a
blue paper!
>
> Convert the same image to 51 in ColorServer and then try explaining the
difference to a bewildered client.
>
>
>
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--
Homann colormanagement tel: +49 30 611 075 18
Jan-Peter Homann mob: +49 171 54 70 358
Herzbergstr. 55 www.colormanagement.de
10365 Berlin mailto:email@hidden
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