DK sRGB vs. gimp SRGB-Built-in

[sean darcy]

I've batch converted a bunch of raw files to png. In color management my
working space is sRGB.

When I import into gimp, I get a dialog box telling me the png has an
embedded color sRGB, and do I want to convert it to the gimp working
space "sRGB-Built-in" .

Are these actually the same color spaces, just different file names? Is
there any preference one versus the other? Should I just point gimp to
the DK sRGB icc file? I assume even if they are the same, a conversion
involves some loss. BTW, what is the DK sRGB file name.

sean

_______________________________________________
Digikam-users mailing list
[hidden email]
https://mail.kde.org/mailman/listinfo/digikam-users

[Marcel Wiesweg]

> I've batch converted a bunch of raw files to png. In color management my
> working space is sRGB.
>
> When I import into gimp, I get a dialog box telling me the png has an
> embedded color sRGB, and do I want to convert it to the gimp working
> space "sRGB-Built-in" .
>
> Are these actually the same color spaces, just different file names?

Probably they are the same. I dont know about possible differences between
sRGB profile files.

> Is
> there any preference one versus the other? Should I just point gimp to
> the DK sRGB icc file? I assume even if they are the same, a conversion
> involves some loss. BTW, what is the DK sRGB file name.

We currently default to
libkdcraw/profiles/srgb-d65.icm
_______________________________________________
Digikam-users mailing list
[hidden email]
https://mail.kde.org/mailman/listinfo/digikam-users

[Gilles Caulier-4]

2009/12/27 Marcel Wiesweg <[hidden email]>:
>> I've batch converted a bunch of raw files to png. In color management my
>> working space is sRGB.

The color temperature of course : D55 : 5500°K or D65 : 6500°K

Gilles Caulier
_______________________________________________
Digikam-users mailing list
[hidden email]
https://mail.kde.org/mailman/listinfo/digikam-users

[Milan Knížek]

sean darcy píše v Ne 27. 12. 2009 v 11:42 -0500:
> I've batch converted a bunch of raw files to png. In color management my
> working space is sRGB.
>
> When I import into gimp, I get a dialog box telling me the png has an
> embedded color sRGB, and do I want to convert it to the gimp working
> space "sRGB-Built-in" .
>
> Are these actually the same color spaces, just different file names?

You can test yourself:

x save the file from GIMP incl. the ICC profile it was converted to.

x open both DK and GIMP images in CinePaint and check the ICC profile
information. CinePaint has to be compiled with the icc_examin plugin.

Alternatively, you can extract the profile from images:

$ convert DK_image.png DK_sRGB_profile.icc
(convert is from ImageMagick suite)

and then have a look at the textual information:

$ iccdump DK_sRGB_profile.icc
(iccdump is from argyllcms package)

And compare with the GIMP image's profile.

Regards,


Milan Knizek
knizek (dot) confy (at) volny (dot) cz
http://www.milan-knizek.net - About linux and photography (Czech
language only)

_______________________________________________
Digikam-users mailing list
[hidden email]
https://mail.kde.org/mailman/listinfo/digikam-users