[digiKam-users] dk 6beta2 portrait orientation problems

[Maik Qualmann]

Please read this thread:

http://digikam.1695700.n4.nabble.com/digiKam-users-How-to-rebuild-RAW-thumbnails-td4706839.html

Maik

Am Dienstag, 16. Oktober 2018, 16:04:51 CEST schrieb 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