Re: gcm with Gimp, EOG, Darktable & Co

[Pascal de Bruijn <pmjdebruijn pcode nl>]

On Wed, Apr 18, 2012 at 9:14 PM, Florian Neukirchen <riannek web de> wrote:
> Hi,
>
> I am trying to figure out how to get gnome-color-manager (on fedora 16 /
> gnome 3.4) to work together with graphics applications. I stumbled over
> a mail by Øyvind Kolås, saying the opposite of every other website I've
> read (e.g. http://blog.pcode.nl/2012/01/29/color-management-on-linux/).

Yeah, that's me :D

> "you most likely are better off working directly in sRGB in GIMP with
> color management disabled. Letting colord / gnome-color-manager or
> similar do it's job of adjusting sRGB according to your displays
> profile. Having both global color correction and GIMP's display filter
> would lead to double correction and thus incorrect results."

That's nonsense... There is no global correction yet... (while
theoretically possible). So double correction is impossible at the
moment. At least not with a normal colord/gcm install.

He's probably confusing VideoLUT with the xyz matrix. They are
supposed to be used together and complement each other.

You should have color management enabled in GIMP/Darktable.

The problem with EOG is, that it enables/disables color management
based on the input file, which is really broken behavior. Which
sometimes explains unexpected results.

And you will always have discrepancies with applications that don't
support color management. If you want to work color managed, you
basically have to cut those application from your workflow (or at
least don't use them to judge any results whatsoever).

Regards,
Pascal de Bruijn