Fred15 project - M1 paperwhite for PC1 coated premium
by Jan-Peter Homann
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Hello all,
ECI recently published at http://www.eci.org/en/projects/fred15
materials for testing colormanagement workflows according the new ISO
12647-2:2013 standard. This includes characterization-data und
ICC-profiles for coated and uncoated papers in offset printing.
One interesting topic is for me the question of the M1 paperwhite
characterization for "premium Coated".
The new ISO 12647-2:2013 defines the M1 paperwhite as L* 95 a*1 b*-4
- From my experience, the average of the most premium coated papers for
offset printing has a M1 paperwhite in the area of e.g. L*95 a*1,5 b*-6
The Fred15 project delivers 3 different beta versions of
characterization-data for premium coated:
1) Spot on data (spectral (!!) data created by Heidelberg
The header of the characterization data does not state, if it is M1 or
M0 data. Paperwhite is L* 95 a*1 b*-4
2) FOGRA51 beta M1 L* a* b* based data
paperwhite is L*95 a*1,5 b*-6
3) FOGRA51 beta M0 L* a* b* based data
paperwhite is L* 94,89 a*1 b*-4
- From my testings with proofs and prints under new ISO 13655:2009
reference lightning, it is important, that we have in standard
characterization a realistic M1 paperwhite, which matches the average
of the real world paper type as close as possible. From my current
state of experience, I would prefer FOGRA51 M1 data
(ideally in a spectral version as the spoton data from Heidelberg,
Spectral characterization-data are allowing - especially for packaging
- - much better simulation of the interaction of CMYK and spotcolors in
printing.)
Furthermore I would like to see an addendum or even a revision of ISO
12647-2:2013 to have M1 whitepoint included, which are reflection the
average of a given paper type / paper category.
Concerning hardcopy proofing, I would like to see a recommendation of
a M1 paperwhite for semi matte proofing papers, which is very near to
M1 L*95 a*1,5 b*-6
Best regards
Jan-Peter Homann
- --
homann colormanagement --------- fon +49 30 611 075 18
Jan-Peter Homann ------------ mobile +49 171 54 70 358
Cotheniusstr. 3 -------- http://www.colormanagement.de
10407 Berlin -------- mailto:homann@colormanagement.de
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9 years, 8 months
- 2
- 1
Re: [ECI-EN] Fred 15 project-Profile comparision
by Paul Sherfield
Hi
I have taken 4 test images and separated them using:
1) ISO coated v2 eci 330
2) ISO coated v2 VIGC 320
3) Fogra 51 M0
4) GRACol 2013 CRPC6
I then proofed them on a EFI Fiery XF rip to a Epson 7900, to a Fogra 39
simulation profile to see the visual effects of mixing these profiles in a
current Fofra 39 printing condition. Then validated to this condition to
ISO 12647/7.
The results are interesting. Visually the Fogra 51 and GRACol images are a
close match to the two sets of images using the Fogra 39 based profiles.
The main area of difference, as may be expected, is in the mid tones. For
the Fogra 51 the common CMYK TVI is slightly noticeable. This mid tone
difference is also slightly visible with the GRACol CRPC 6 profile which
allows for a higher K TVI.
I intend to do further tests using differing images which may point to
greater differences, but at the moment my first thoughts are that, for
most work, images using these profiles may be interchangeable using the
differing printing conditions.
I also hope later this year to carry out press tests using these profiles
and these printing conditions and inter-changing between them.
Regards
Paul Sherfield
Telephone : + 44 1442 207626
Mobile: + 44 7899 906385
http://www.missinghorsecons.co.uk
http://twitter.com/#!/missinghorse
Apple Solutions Expert - Print & Publishing
Member - UK TC130 Technical Advisory Group (ISO 12647 Printing Standards)
UK Expert: ISO TC130/Working Group 13 on certification of printing
standards
Chair BPIF UK ISO 12647 Certification Steering Group
Member - BPIF Technical Committee
Lean and green?
To save money and become a greener printer, see
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On 19/06/2014 11:00, "eci-en-request(a)lists.callassoftware.com"
<eci-en-request(a)lists.callassoftware.com> wrote:
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>Today's Topics:
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> 1. Re: Fred15 project - M1 paperwhite for PC1 coated premium
> (Bret Hesler)
>
>
>----------------------------------------------------------------------
>
>Message: 1
>Date: Wed, 18 Jun 2014 19:42:08 -0400
>From: Bret Hesler <bret.hesler(a)gmail.com>
>Subject: Re: [ECI-EN] Fred15 project - M1 paperwhite for PC1 coated
> premium
>To: eci-en(a)lists.callassoftware.com
>Message-ID:
> <CADCjBLh0V1HawMod1iB5M=_MZ7GpeDrc_rpJLu4PENnQRtK=mg(a)mail.gmail.com>
>Content-Type: text/plain; charset="utf-8"
>
>Hello,
>With the GRACoL 2013 profile, the proofs made with M1 readings were too
>yellow, the proofs made with M0 readings were much better.
>
>I read 11 different papers with M0 and M1 on and i1Pro2. The b* range for
>M0 was -2.21 to -6.64 with an average of -3.98. The b* range for M1 was
>-3.95 to -9.52 with an average of -6.1
>
>Thanks,
>Bret
>
>> ----------------------------------------------------------------------
>>
>> Message: 1
>> Date: Tue, 27 May 2014 17:19:12 -0400
>> From: Bret Hesler <bret.hesler(a)gmail.com>
>> Subject: Re: [ECI-EN] Fred15 project - M1 paperwhite for PC1 coated
>> premium
>> To: eci-en(a)lists.callassoftware.com
>> Message-ID:
>> <
>> CADCjBLh+p2HrjBo6O_CvJYUEqFCJhMCXzVTS5r-2Bkrz6nV0iA(a)mail.gmail.com>
>> Content-Type: text/plain; charset="utf-8"
>>
>> Hello,
>> I just got an i1 Pro 2 and will be calibrating a proofer tomorrow to the
>> Gracol 2013 dataset, which has the same white point and specifies M1. I
>> took M1 and M0 readings of a couple papers and I agree with your
>>findings.
>> Sappi Opus is a pretty common sheet, which I have been using as a target
>> for years, and reads about -4b* in M0 and -6.5b* in M1. After I
>>complete my
>> profiling tomorrow, I will report back.
>>
>> Thanks,
>> Bret Hesler
>>
>>
>
9 years, 10 months
- 2
- 1
Re: [ECI-EN] Fred15 project - M1 paperwhite for PC1 coated premium
by Bret Hesler
Hello,
With the GRACoL 2013 profile, the proofs made with M1 readings were too
yellow, the proofs made with M0 readings were much better.
I read 11 different papers with M0 and M1 on and i1Pro2. The b* range for
M0 was -2.21 to -6.64 with an average of -3.98. The b* range for M1 was
-3.95 to -9.52 with an average of -6.1
Thanks,
Bret
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Tue, 27 May 2014 17:19:12 -0400
> From: Bret Hesler <bret.hesler(a)gmail.com>
> Subject: Re: [ECI-EN] Fred15 project - M1 paperwhite for PC1 coated
> premium
> To: eci-en(a)lists.callassoftware.com
> Message-ID:
> <
> CADCjBLh+p2HrjBo6O_CvJYUEqFCJhMCXzVTS5r-2Bkrz6nV0iA(a)mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Hello,
> I just got an i1 Pro 2 and will be calibrating a proofer tomorrow to the
> Gracol 2013 dataset, which has the same white point and specifies M1. I
> took M1 and M0 readings of a couple papers and I agree with your findings.
> Sappi Opus is a pretty common sheet, which I have been using as a target
> for years, and reads about -4b* in M0 and -6.5b* in M1. After I complete my
> profiling tomorrow, I will report back.
>
> Thanks,
> Bret Hesler
>
>
9 years, 10 months
- 1
- 0