[digiKam-users] dk 6beta2 portrait orientation problems

[digikam at 911networks.com]

Sorry but I will have to disagree with you. dk 5.9.0 doesn't have the
problem:

dk 6beta2: 			https://i.imgur.com/W5bNhcM.png
dk5.9.0: 		9709.cr2: https://i.imgur.com/kFfvkrx.png
dk5.9.0:		9726.cr2: https://i.imgur.com/0refWgf.png

I have also attached the xmps for the files. If you need I can also
provide the cr2 (canon-raw) images.

To me it seem that:

* 5.9.0 reads the image preview (b&w preview) and uses that for the
  thumbnails
* 6beta2 tries to process the image and use the resulting mini-image
  for the thumbnails

Thanks

Syv

On Tue, 16 Oct 2018 07:41:14 +0200
Gilles Caulier <caulier.gilles at gmail.com> wrote:

> Hi,
> 
> Welcome to the RAW shot world. You problem is well know, as you
> have post processed the CR2 files in your camera to rotate the
> preview in right orientation while previewing photo.
> 
> When you touch orientation of preview with camera, this do not
> change the RAW data but the JPEG preview image embedded inside the
> file.
> 
> The problem is : the JPEG image has no Exif info attached (where we
> found the orientation information in standard). The only
> information oabout orientation come from standard Exif from RAW
> metadata. Both image are different as you post-process orientation
> with camera. So now, digiKam is lost.
> 
> Perhaps this information from Canon JPEG preview can be taken from
> private RAW makernotes, i don't know.
> Another solution will be to render the thumbnail with RAW data
> (using a simplified demosaicing to prevent time latency).
> 
> I would to know how software render the CR2 preview here ?
> Aperture, LR, etc...
> 
> Best
> 
> Gilles Caulier
> 
> Le mar. 16 oct. 2018 à 02:09, <digikam at 911networks.com> a écrit :
> 
> > Correction:
> >
> > It's not all the portrait orientation images that are rotated, but
> > the vast majority are, see:
> >
> > https://i.imgur.com/W5bNhcM.png
> >
> > Thanks
> >
> > Syv
> >
> > .......................
> >
> > Converted yesterday from dk5.9 appimage to dk6beta2 appimage.
> >
> > I just noticed a problem: all my portrait orientation images are
> > sideways:
> >
> > https://i.imgur.com/rx6EMNX.png
> >
> > How to deal with that?
> >
> > --
> > sknahT
> >
> > vyS
> >  


-- 
sknahT

vyS
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