[digiKam-users] dk 6beta2 portrait orientation problems

[Gilles Caulier]

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
>
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