[Digikam-users] problems with ICC profiles

[Gilles Caulier]

On Friday 19 May 2006 01:37 pm, Gerhard Kulzer wrote:
> On Friday 19 May 2006 13:16, Daniel Bauer wrote:
> > Am Freitag, 19. Mai 2006 12:40 schrieb Gilles Caulier:
> > > Daniel, put me some RAW files somewhere to download, i will trying to
> > > perform tests...
> >
> > Thank you very much!
> > I'll send the URL in a PM (you can share the picture with other
> > developpers, but not puplic... :-)
> >
> > > Also, witch LCms library version you use in your system ?
> > >
> > > Gilles
> >
> > liblcms 1.14-4 i586 Suse 10.0 rpm
> > locate says:
> > /usr/lib/liblcms.la
> > /usr/lib/liblcms.so
> > /usr/lib/liblcms.so.1
> > /usr/lib/liblcms.so.1.0.14
>
> Gilles, I have the same problems as Daniel (using liblcms 1.0.15 and
> EOS-350D). I have the dark pictures since ever I use svn 0.9 version. I
> thought up to now that this was still in development, but now I agree we
> should solve the problem (Canon DSLR is very popular). Maybe it is a Canon
> specific problem. But why does ufraw not have it?
> The result of digiKam is exactly the same as if I apply dcraw on the
> command line without color management.

Gerhard, you said that you can use these profile under ufraw...

To have tested the Canon Icc profiles on my computer, nothing work properly in 
digiKam _AND_ ufraw (0.5 here) !

If i set a Canon profile in digiKam setup, and I display the colors gamut 
graph, there is no CIE 1931 chromaticity diagram available (no white triangle 
in fact). This is why we have a black image in digiKam image editor. Look in 
wikipedia for more info about Gamut :

http://en.wikipedia.org/wiki/Gamut

I don't know what is wrong exactly with this profile, but we cannot used these 
files properly under linux. Paco, if you have some explainations, please 
let's me here (:=)))

BUT, with your Canon camera, you can use the linear profile available here 
(public domain!) :

http://www.lysator.liu.se/~ture/eos10d/

It work fine under linux (digikam & ufraw) !!! I have tested this one with 
Daniel image (very nice (:=)))...

Gilles