[Bug 295523] New: Canon Powershot S100 RAW improperly treated

[tosca]

https://bugs.kde.org/show_bug.cgi?id=295523

            Bug ID: 295523
          Severity: normal
           Version: 2.5.0
          Priority: NOR
          Assignee: [hidden email]
           Summary: Canon Powershot S100 RAW improperly treated
    Classification: Unclassified
                OS: Linux
          Reporter: [hidden email]
          Hardware: Fedora RPMs
            Status: UNCONFIRMED
         Component: RAW files management
           Product: digikam

CR2 files from a Canon Powershot S100 are not properly recognized and treated:
they are heavily magenta-tinted, and show a strong lens distorsion.
Here is an example of both CR2 and JPG files produced by the camera:
http://www.marie-noelle-augendre.com/fichiers/Darktable/IMG_0008.CR2
http://www.marie-noelle-augendre.com/fichiers/Darktable/IMG_0008.JPG

--
You are receiving this mail because:
You are the assignee for the bug.
_______________________________________________
Digikam-devel mailing list
[hidden email]
https://mail.kde.org/mailman/listinfo/digikam-devel

[Gilles Caulier-4]

https://bugs.kde.org/show_bug.cgi?id=295523

--- Comment #1 from Gilles Caulier <[hidden email]> ---
Marie Noelle,

This is a typical case where JPEG is better than RAW, due to post processing
done by camera to render JPEG. Here you can see the comparison of Raw (on left
side) and JPEG (on right side):

http://www.flickr.com/photos/digikam/6964153119/sizes/o/in/photostream/

RAW is loaded in light table as half size preview. We don't use JPEG embedded.
JPEG is full size preview.

If we load RAW JPEG embedded, both image are the same.

Why ? It's simple : you camera, to process JPEG, it apply Lens distortion
corrections. You have used a short focal (as a fish eyes lens), and camera fix
image using lens profile. Probably that chromatic aberration correction are
processed. This is why the magenta-tinted area disappear in JPEG.

RAW file, is... raw image, unprocessed by camera.

It's not possible (or it's complex) to reproduce camera fixes with RAW.

Alex can you confirm my analyse ?

--
You are receiving this mail because:
You are the assignee for the bug.
_______________________________________________
Digikam-devel mailing list
[hidden email]
https://mail.kde.org/mailman/listinfo/digikam-devel

[Alex Tutubalin]

https://bugs.kde.org/show_bug.cgi?id=295523

--- Comment #2 from Alex Tutubalin <[hidden email]> ---
Created attachment 69370
  --> https://bugs.kde.org/attachment.cgi?id=69370&action=edit
Your sample processed with dcraw_emu -w

Cannot reproduce with LibRaw: dcraw_emu -w works fine on your sample (sure, no
barrel correction). See attached result

--
You are receiving this mail because:
You are the assignee for the bug.
_______________________________________________
Digikam-devel mailing list
[hidden email]
https://mail.kde.org/mailman/listinfo/digikam-devel

[Gilles Caulier-4]

https://bugs.kde.org/show_bug.cgi?id=295523

--- Comment #3 from Gilles Caulier <[hidden email]> ---
Marie Noelle

This file still valid using last digiKam 3.50 and a most recent version of
libkdcraw ?

Gilles Caulier

--
You are receiving this mail because:
You are the assignee for the bug.
_______________________________________________
Digikam-devel mailing list
[hidden email]
https://mail.kde.org/mailman/listinfo/digikam-devel

[Gilles Caulier-4]

https://bugs.kde.org/show_bug.cgi?id=295523

--- Comment #4 from Gilles Caulier <[hidden email]> ---
Marie Noelle,

What's about this file using last digiKam 4.2.0 AND last Libraw 0.16 ?

Gilles Caulier

--
You are receiving this mail because:
You are the assignee for the bug.
_______________________________________________
Digikam-devel mailing list
[hidden email]
https://mail.kde.org/mailman/listinfo/digikam-devel

[Gilles Caulier-4]

https://bugs.kde.org/show_bug.cgi?id=295523

--- Comment #5 from Gilles Caulier <[hidden email]> ---
Marie Noëlle,

Problem still valid with last digiKam 4.10.0 ?

Gilles Caulier

--
You are receiving this mail because:
You are the assignee for the bug.
_______________________________________________
Digikam-devel mailing list
[hidden email]
https://mail.kde.org/mailman/listinfo/digikam-devel

[Gilles Caulier-4]

https://bugs.kde.org/show_bug.cgi?id=295523

Gilles Caulier <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |WAITINGFORINFO

--
You are receiving this mail because:
You are the assignee for the bug.
_______________________________________________
Digikam-devel mailing list
[hidden email]
https://mail.kde.org/mailman/listinfo/digikam-devel

[Gilles Caulier-4]

https://bugs.kde.org/show_bug.cgi?id=295523

--- Comment #6 from Gilles Caulier <[hidden email]> ---
New digiKam 4.11.0 is available with official PKG installer for OSX.

https://www.digikam.org/node/740

Can you reproduce the problem with this release ?

Gilles Caulier

--
You are receiving this mail because:
You are the assignee for the bug.
_______________________________________________
Digikam-devel mailing list
[hidden email]
https://mail.kde.org/mailman/listinfo/digikam-devel

[Gilles Caulier-4]

https://bugs.kde.org/show_bug.cgi?id=295523

--- Comment #7 from Gilles Caulier <[hidden email]> ---
digiKam 4.12.0 is out :

https://www.digikam.org/node/741

We need a fresh feedback using this release please...
Thanks in advance.

--
You are receiving this mail because:
You are the assignee for the bug.
_______________________________________________
Digikam-devel mailing list
[hidden email]
https://mail.kde.org/mailman/listinfo/digikam-devel

[bugzilla_noreply]

https://bugs.kde.org/show_bug.cgi?id=295523

[hidden email] changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|WAITINGFORINFO              |FIXED
   Version Fixed In|                            |5.1.0

--- Comment #8 from [hidden email] ---
With digiKam 5.0.0, this problem is not reproducible.
I close this file now. Don't hesitate to re-open if necessary.
Gilles Caulier

--
You are receiving this mail because:
You are the assignee for the bug.
_______________________________________________
Digikam-devel mailing list
[hidden email]
https://mail.kde.org/mailman/listinfo/digikam-devel

[bugzilla_noreply]

https://bugs.kde.org/show_bug.cgi?id=295523

[hidden email] changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|Workflow                    |FilesIO-RAW

--
You are receiving this mail because:
You are the assignee for the bug.