[Digikam-users] Rotatation method based on EXIF

[Dudas Gabor]

Marcel Wiesweg wrote:
>>> Both 0.8.x and 0.9.0-svn. Just set the right option in cameragui and
>>> metadata setup
>>>
>>> Note : 0.9.0 only will set :
>>>
>>> - The embedded JPEG thumb using the rotated image.
>>> - The image size Exif tags to the right values.
>>>
>>> Gilles
>> Sorry..I don't quite understand...:)
>> "Both 0.8.x and 0.9-svn" means both versions are possible?
> 
> Both versions support both rotation methods.
> 
>> As I see in the Configuration/Embedded Info panel I have to select the
>> "Rotate images and thumbnails according to EXIF tag" and the "Set EXIF
>> orientation tag to normal after rotate/flip" options to have a physically
>> rotated picture. Please confirm...
> 
> That's for the image editor. While downloading, look at the advanced options.
> 
>> About the rotation: Is it done in a "losless" way? Or with recompression?
> 
> The CameraUI is lossless. The image editor is pixel-based and thus lossless if 
> you save back to JPEG. For already downloaded images, use the Jpeglossless 
> kipi plugin, it's the same method as the CameraUI rotation.
> 
>> Actually in my opinion the real rotation of the picture during the
>> downloading phase is better (only if it is possible to done without data
>> loss), since some of the image programs/viewers are still not dealing with
>> the EXIF tag, thus they will open a portrait horizontally.
> 
> That's right, but you have the choice.
> 
> Marcel
> 
>>
>> Regards,
>> Gabor
> 
> 

Thanks for the answer!

 > The CameraUI is lossless. The image editor is pixel-based and thus lossless if
 > you save back to JPEG."

So, basically either I rotate from the main window using the KipiPlugin, or from 
the image editor, I do lossless operations...?

Regards,
Gabor