[Digikam-devel] [digikam] [Bug 331397] preview and thumbnails colors are wrong for cr2

Gilles Caulier caulier.gilles at gmail.com
Sat Feb 22 08:15:29 GMT 2014


Gilles Caulier <caulier.gilles at gmail.com> changed:

           What    |Removed                     |Added
             Status|UNCONFIRMED                 |RESOLVED
                 CC|                            |caulier.gilles at gmail.com
         Resolution|---                         |INVALID

--- Comment #2 from Gilles Caulier <caulier.gilles at gmail.com> ---
This file is invalid :

- Thumbnail from RAW use embedded JPEG image from RAW container.
- Preview can use embedded JPEG or half size demosaiced RAW.
- Image Editor use full size of demosaiced RAW

JPEG and RAW image data do not use the same workflow and do not give same
result. With RAW you need to reproduce whole post processing done by camera
firmware. With JPEG all is ready to use.

In other word, this behavior is normal. The best that you can do, is to use
half size demosaiced RAW with preview (it's an option from digiKam setup), but
take a care demosaicing take while to run. This is why thumbnail use embedded
JPEG for performance reasons...

Gilles Caulier

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