[argyllcms] Re: Number of patches - well behaved printer?
- From: Idea Digital Imaging <qcore@xxxxxxxxxxxxxxxx>
- To: argyllcms@xxxxxxxxxxxxx
- Date: Thu, 24 Feb 2011 13:27:47 +0000
On 24 Feb 2011, at 12:30, Iliah Borg wrote:
But of course, chart is on the film. Reproduction here is of a
physical object, that is why we are operating measured values, not
the desired values. So, in your words - "the chart on the film" is
the subject of reproduction. This allows to approximate how the
particular film responds to the light.
How useful are the results of this process?
I looked at trying to profile negatives on our drum scanners more than
a decade ago but the results were very poor.
You could build a good profile from a correctly exposed test image but
variations in over/under exposure in real world images rendered the
profiles useless.
And, as you also need to incorporate a wide choice of print papers
into colour managment, I didn't really see how profiling would be
faster or better than having a good scanner operator getting the
colour right during scanning?
We do build custom targets and profiles for photographic papers which
work very well -- but I've never seen a profile for a negative stock
that would give consistent or acceptable results for high-end work.
--
Martin Orpen
T: 020 7739 5554 • M: 07768 414558
Idea Digital Imaging Ltd, 5 Christina Street, London EC2A 4PA
Registered in England & Wales: 4051407 VAT Registration: 548100073
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