My guess is that the camera does not record the raw image data any
differently when held in portrait mode so the RAW file, as seen by
darktable, is still effectively landscape but there is a marker set by the
camera in the EXIF data that says something along the lines of "this was
taken portrait". When darktable imports the picture it automatically
applies the orientation module to get the picture into portrait orientation
and that therefore counts as a modification.
If I go to one of my portrait pictures and turn off the orientation module
it reverts to landscape.
On 7 December 2015 at 09:21, Christian Mandel <c.man...@gmx.net> wrote:
> Hi all,
>
> for a while I wonder that freshly imported images are randomly marked as
> changed (with the +-wave icon). Now it seems that I have discovered a
> pattern: it affects only the portrait oriented images (Canon 5DII), and
> probably all of them. The dt version is 1.6.9, 64 bit on ubuntu 15.04,
> build from Pascal's ppa (1:1.6.9-0pmjdebruijn1~vivid). Checking older
> film rolls it seems that this only happens with recent dt versions and
> that it happens during import. Do you have an explanation?
>
> Thanks & best regards
>
> Chris
>
>
>
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