https://bugs.kde.org/show_bug.cgi?id=289181--- Comment #8 from <_kfj yahoo com> 2011-12-18 13:13:59 ---
Am 18.12.2011 10:19, schrieb Gilles Caulier:
> The problem is not with RAW converter. Look in metadata TIFF orientation tag is
> the same than CR2. If you disable thumb autorotate option from digiKam/metadta
> config dialog, TIFF will not be rotated
this is not so, at least not on my system. AFAIKT the raw processor here
ignores the 'Orientation' tag and rotates according to the 'Camera
Orientation' tag. Please note that my problem is that the image IS
rotated, but I want it NOT to be rotated, this is why I have set the
'Orientation' tag to 'Horizontal'. And my issue is with the resulting
TIFF file, not with the CR2 or it's display in digiKam.
In hugin-ptx, where I am discussing the issue, I've been told that there
were versions of dcraw which exhibited this bug, so I suppose that's
what my problem is here.
Of course it's possible that with your later version of the raw
converter, the bug has been fixed already on your system.
> The problem is about RAW preview image where we don't have any relevant
> information about rotation angle. The real image rotation information is not
> the same. It'is issue,s a big puzzle.
the preview file will be rotated if autorotate is set in the camera,
otherwise it's not. I've checked by extracting the embedded JPG with
dcraw -e.
> The RAW preview is not taken from RAW data. It's an embedded JPEG image in RAW
> file. And orientation of this preview is not the same than RAW image, due to
> your change of your camera orientation settings.
>
> To solve this issue digiKam must be able to rotate thumbs independently of real
> image data. There is already a report in digiKam bugzilla about this subject...
my problem isn't with the embedded thumbnail images. I process the data
with hugin to make panoramas and I have a pretty good idea how to tell
rotated image data from unrotated data. I need all the image data as it
hit the sensor. dcraw, DPP and raw therapee all perform as I expect on
this system. digiKam does not. Be assured the problem exists and has
nothing to do with thumbnails or digiKam's thumbnail display.
Kay
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