https://bugs.kde.org/show_bug.cgi?id=408755

--- Comment #4 from amyspark <a...@amyspark.me> ---
(In reply to ch-bartz from comment #3)
> (In reply to Halla Rempt from comment #1)
> > I guess that we'd best convert every layer to the image colorspace if the
> > layer colorspace is different. I don't think tiff actually supports
> > heterogenous images.
> 
> I have read the standard differently. The specification ICC.1:2010 (Profile
> version 4.3.0.0) (http://color.org/icc_specs2.xalter) says:
> 
> "A  TIFF  file  may  contain  more  than  one  image,  and  so,  more  than 
> one  IFD.  Each  IFD  may  have  its  own embedded profile. Note, however,
> that Baseline TIFF readers are not required to read any IFDs beyond the
> first one."
> 
> So it should be able to assign different ICC color profiles to layers and
> KRITA's TIFF export should embed individual ICC color profiles to all TIFF
> pages, if assigned profiles differ. 
> 
> TIFF import should idealy respect individual color profiles for all pages.
> If importing a multi-page TIFF where only the first page has an embedded
> color profile, the TIFF import should apply this color profile to all TIFF
> pages (layers).

Can confirm; see the TIFF v6 standard, page 16, last paragraph, then page 101,
3rd paragraph of the current ICC.1:2010.

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