[argyllcms] Re: Any guidelines for creating scanner profiles with Argyll?

  • From: Gerhard Fuernkranz <nospam456@xxxxxx>
  • To: argyllcms@xxxxxxxxxxxxx
  • Date: Wed, 26 Dec 2007 22:44:36 +0100

Roger Breton wrote:
> I want to show my students how various charts can be used for profiling a
> scanner, among which is ye-ole faithful IT8.7/x.

Roger, sure, why not. Just print the target of your choice, measure the
patches accurately with a spectrometer/colorimeter and create a
reference file for your target from these measurements (analog to the
reference file which you got for your IT8 target). For using your target
with scanin, you'll also need a .cht file (if you use targen/printtarg,
then printtarg can create the .cht file for you).

If you intend to scan media of a very particular type (let's for
instance assume that you would like to scan inkjet prints), then it will
be IMO even beneficial, if you profile the scanner using a target
printed on the SAME media type which you intend to scan (-> same paper,
same printer, same inks, same printer driver settings), and not with an
IT8 target, which is a significantly different media type (printed
chemically on photo paper) and which may likely result in a profile
which suffers from metamerism if it is used for scanning the inkjet
prints. Also note the potential media WP mismatch between the paper
color of the IT8 target and the paper color of the media which you
actually want to scan.


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