Re: FOGRA52 & i1Profiler [subject corrected]
Re: FOGRA52 & i1Profiler [subject corrected]
- Subject: Re: FOGRA52 & i1Profiler [subject corrected]
- From: Martin Orpen <email@hidden>
- Date: Mon, 11 Sep 2017 17:07:49 +0100
> On 11 Sep 2017, at 16:27, Claas Bickeböller <email@hidden> wrote:
>
>>
>> These are CMYK separations to various profiles built using the FOGRA52.txt
>> data (and a couple using the 47L data).
>
> Source were the RGB originals?
> Which rendering intent did you use?
>
> I assume relative colorimetric?
Wrong assumption.
All the images in the viewer in that picture were converted using perceptual
intent.
Even using perceptual, the yellow levels are too low to create neutral blacks
and it is still impossible to match the near-neutral shadows of the ECI profile.
GMG’s conversion is the only one with *corrective* amounts of yellow — yellow
exceeds magenta throughout the neutrals. But this is a little too much for the
eye in the midtones because it looks distracting in some areas.
As I mentioned before, the results from custom built profiles — including
perceptual rendering — are so poor that you are better off using the 47L data
as a profile source.
Regards
--
Martin Orpen
Idea Digital Imaging Ltd
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