[digikam] [Bug 494640] DNG conversion from CR2

2025-06-07 Thread bugzilla_noreply 
https://bugs.kde.org/show_bug.cgi?id=494640

--- Comment #16 from caulier.gil...@gmail.com ---
Hi Rolf,

About the speed, it's clear. There is nothing to improve in digiKam as we are
relevant to the open source DNG SDK which is not all the code of the Adobe DNG
Converter, only the backend to process files.

We are also dependent on the libraw library used in digiKam to extract non
demosaiced RAW data and pass it to the DNG converter. Here also, no
improvements can be done about the speed as extraction is streamlined with the
RAW file. No preprocessing is done in libraw where we can expect to parallelize
something.

About the quality and the rendering of the DNG conversion, we apply the best
metadata backport and adjustments that we know to pass to the DNG SDK. You must
know that even if the DNG SDK is an open source component, there is no doc and
examples available. It's difficult to use and tune. Also, at each DNG SDK
version the API changes and the SDK calls must be adjusted, without any help
from the Adobe team.

So for me, the best thing to do is already here in digiKam. Do not expect
serious improvements in the future...

Best regards

Gilles Caulier

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[digikam] [Bug 494640] DNG conversion from CR2

2025-05-20 Thread Bertil Rolf 
https://bugs.kde.org/show_bug.cgi?id=494640

--- Comment #15 from Bertil Rolf  ---
About the speed of Adobe conversion, I can only say it is impressive, 
not how it is attained.

Thanks for the hint about BQM.

For an advanced amateur like me, the greatest advantage DigiKam has over 
Lightroom are the DAM features. I use them for selecting photos for 
slide shows on the fly and play them to my public. This is the main way 
we look at old photos and DigiKam runs from thin clients I have 
repurposed for media playing.

Although facetagging and geotagging in DigiKam are very fine, I have not 
found any way to make use of the results in the slide shows.

Best regards

Bertil Rolf

Baden bei Wien





On 2025-05-16 13:55, bugzilla_nore...@kde.org wrote:
> https://bugs.kde.org/show_bug.cgi?id=494640
>
> --- Comment #14 from caulier.gil...@gmail.com ---
> Well about the speed, i would expect a multicore/multithread options/functions
> in the Adobe DNG SDK that digiKa uses, but no chance, there is nothing like
> this. So the conversion processing done by digiKam will run on a single
> thread/single core.
>
> Did you see a multi-core usage with Adobe RAW converter while converting CR2 
> to
> DNG ?
>
> Tip: The DNG Convert in digiKam is also available in BQM. So, if you have
> enough RAM and Multicore, you can convert more than one file at the same time.
>
> Gilles Caulier
>

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[digikam] [Bug 494640] DNG conversion from CR2

2025-05-16 Thread bugzilla_noreply 
https://bugs.kde.org/show_bug.cgi?id=494640

--- Comment #14 from caulier.gil...@gmail.com ---
Well about the speed, i would expect a multicore/multithread options/functions
in the Adobe DNG SDK that digiKa uses, but no chance, there is nothing like
this. So the conversion processing done by digiKam will run on a single
thread/single core.

Did you see a multi-core usage with Adobe RAW converter while converting CR2 to
DNG ?

Tip: The DNG Convert in digiKam is also available in BQM. So, if you have
enough RAM and Multicore, you can convert more than one file at the same time.

Gilles Caulier

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[digikam] [Bug 494640] DNG conversion from CR2

2025-05-16 Thread Bertil Rolf 
https://bugs.kde.org/show_bug.cgi?id=494640

--- Comment #13 from Bertil Rolf  ---
Hello,

You are right, the image quality of Adobe Converter and DigiKam is 
roughly equivalent. I fed the same CR2 files into both apps without much 
thought.

Except for file size, there is a very significant different for the 
user, namely processing time.

The latest version of Adobe C is very fast while DigiKam 870 on my PC 
(HP Z240, 32 GB) was intolerably slow for my workflow.

Sure, it all comes down to which workflow you are comfortable with. In 
Adobe, I would convert all raw photos into DNG with AC and cull them 
afterwards in LR. I guess that in DK, I would need to cull them before 
feeding them to conversion. I have not tried this option, however.

Best regards

Bertil Rolf


On 2025-05-12 08:13, bugzilla_nore...@kde.org wrote:
> https://bugs.kde.org/show_bug.cgi?id=494640
>
> --- Comment #12 from caulier.gil...@gmail.com ---
> I take a look to your comparison images generated from CR2 to Adobe and 
> digiKam
> tool. results are not the same of course, but the result are near and not too
> bad after all.
>
> Did you take a care to render the DNG preview with digiKam using the RAW data
> (or Embeded JPEG) for both to compare. Data to compare must be the same type.
>
> Best
>
> Gilles Caulier
>

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[digikam] [Bug 494640] DNG conversion from CR2

2025-05-11 Thread bugzilla_noreply 
https://bugs.kde.org/show_bug.cgi?id=494640

--- Comment #12 from caulier.gil...@gmail.com ---
I take a look to your comparison images generated from CR2 to Adobe and digiKam
tool. results are not the same of course, but the result are near and not too
bad after all.

Did you take a care to render the DNG preview with digiKam using the RAW data
(or Embeded JPEG) for both to compare. Data to compare must be the same type.

Best

Gilles Caulier

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[digikam] [Bug 494640] DNG conversion from CR2

2025-05-02 Thread Bertil Rolf 
https://bugs.kde.org/show_bug.cgi?id=494640

--- Comment #11 from Bertil Rolf  ---
Hello!

I now have tried out DNG-conversion from CR2 to DNG, using DigiKam 
8.7.0. on Windows 11 and using Adobe DNG Converter for comparison.

Photos and comments enclosed here:

https://drive.google.com/file/d/104Pwydzq4P6dPPyZypsMgltq629PnXZc/view?usp=drive_link

Best regards and Good luck!

Bertil Rolf

Baden bei Wien

On 2025-04-11 20:13, bugzilla_nore...@kde.org wrote:
> https://bugs.kde.org/show_bug.cgi?id=494640
>
> --- Comment #8 from caulier.gil...@gmail.com ---
> Hi,
>
> The 8.7.0 pre-release Windows installer from today have been rebuilt from
> scratch with Qt 6.8.3, KDE 6.12, OpenCV 4.11 + CUDA support, Exiv2 0.28.5,
> ExifTool 13.27, ffmpeg 7, all image codecs updated to last version (jxl, avif,
> heif, aom, etc.).
>
> Please try with this version to see if your problem still reproducible...
>
> https://files.kde.org/digikam/
>
> Thanks in advance
> Best regards
>
> Gilles Caulier
>

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[digikam] [Bug 494640] DNG conversion from CR2

2025-04-12 Thread bugzilla_noreply 
https://bugs.kde.org/show_bug.cgi?id=494640

--- Comment #10 from caulier.gil...@gmail.com ---
Thanks you. For info the Libraw processor used in parallel than DNG SDK is
always updated between digiKam versions (libraw code is included in digiKam as
well)...

https://www.libraw.org/

This is why i ask regularly in digiKam Bugzilla if the dysfunctions are
reproducible...

Best

Gilles Caulier

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[digikam] [Bug 494640] DNG conversion from CR2

2025-04-12 Thread Bertil Rolf 
https://bugs.kde.org/show_bug.cgi?id=494640

--- Comment #9 from Bertil Rolf  ---
Hello,

Will try out this in a couple of days.

Btw, like 8.6.0. a lot!

Best

Bertil Rolf

On 2025-04-11 20:13, bugzilla_nore...@kde.org wrote:
> https://bugs.kde.org/show_bug.cgi?id=494640
>
> --- Comment #8 from caulier.gil...@gmail.com ---
> Hi,
>
> The 8.7.0 pre-release Windows installer from today have been rebuilt from
> scratch with Qt 6.8.3, KDE 6.12, OpenCV 4.11 + CUDA support, Exiv2 0.28.5,
> ExifTool 13.27, ffmpeg 7, all image codecs updated to last version (jxl, avif,
> heif, aom, etc.).
>
> Please try with this version to see if your problem still reproducible...
>
> https://files.kde.org/digikam/
>
> Thanks in advance
> Best regards
>
> Gilles Caulier
>

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[digikam] [Bug 494640] DNG conversion from CR2

2025-04-11 Thread bugzilla_noreply 
https://bugs.kde.org/show_bug.cgi?id=494640

--- Comment #8 from caulier.gil...@gmail.com ---
Hi,

The 8.7.0 pre-release Windows installer from today have been rebuilt from
scratch with Qt 6.8.3, KDE 6.12, OpenCV 4.11 + CUDA support, Exiv2 0.28.5,
ExifTool 13.27, ffmpeg 7, all image codecs updated to last version (jxl, avif,
heif, aom, etc.).

Please try with this version to see if your problem still reproducible...

https://files.kde.org/digikam/

Thanks in advance
Best regards

Gilles Caulier

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[digikam] [Bug 494640] DNG conversion from CR2

2024-10-13 Thread Maik Qualmann 
https://bugs.kde.org/show_bug.cgi?id=494640

--- Comment #7 from Maik Qualmann  ---
Git commit 43fb998e4dc9ed29829943f900191e195d6a77bf by Maik Qualmann.
Committed on 13/10/2024 at 09:00.
Pushed by mqualmann into branch 'master'.

fixed focal length only for a specific Sony camera model

M  +5-2core/libs/dimg/filters/lens/lensfunfilter.cpp

https://invent.kde.org/graphics/digikam/-/commit/43fb998e4dc9ed29829943f900191e195d6a77bf

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[digikam] [Bug 494640] DNG conversion from CR2

2024-10-13 Thread Maik Qualmann 
https://bugs.kde.org/show_bug.cgi?id=494640

Maik Qualmann  changed:

   What|Removed |Added

 CC||metzping...@gmail.com

--- Comment #6 from Maik Qualmann  ---
The image is automatically recognized by our lens correction. But it is not
corrected correctly at the determined focal length of 10.2 mm. Only at around
1.0 mm do we have a roughly corrected image. Either there is an error in the
lensfun database or we are overlooking something with fixed lenses when
transferring the focal length.

The question is whether we want to use lens correction at all when converting
to DNG and do other (commercial) converters do it?

Maik

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[digikam] [Bug 494640] DNG conversion from CR2

2024-10-13 Thread Maik Qualmann 
https://bugs.kde.org/show_bug.cgi?id=494640

--- Comment #5 from Maik Qualmann  ---
So digiKam doesn't bend lines. Your RAW image from the camera is actually bent
like that.

digiKam just doesn't apply any lens correction to create the preview image for
the DNG.

Maik

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[digikam] [Bug 494640] DNG conversion from CR2

2024-10-13 Thread Bertil Rolf 
https://bugs.kde.org/show_bug.cgi?id=494640

--- Comment #4 from Bertil Rolf  ---
In the description of the bug, you'll find the link to a zipfile on my 
account on Google Drive.


On 2024-10-13 10:17, bugzilla_nore...@kde.org wrote:
> https://bugs.kde.org/show_bug.cgi?id=494640
>
> --- Comment #3 from caulier.gil...@gmail.com ---
> can you share in the cloud a CR2 file sample to test ?
>

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[digikam] [Bug 494640] DNG conversion from CR2

2024-10-13 Thread bugzilla_noreply 
https://bugs.kde.org/show_bug.cgi?id=494640

--- Comment #3 from caulier.gil...@gmail.com ---
can you share in the cloud a CR2 file sample to test ?

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[digikam] [Bug 494640] DNG conversion from CR2

2024-10-13 Thread bugzilla_noreply 
https://bugs.kde.org/show_bug.cgi?id=494640

caulier.gil...@gmail.com changed:

   What|Removed |Added

Version|unspecified |8.5.0

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[digikam] [Bug 494640] DNG conversion from CR2

2024-10-13 Thread Bertil Rolf 
https://bugs.kde.org/show_bug.cgi?id=494640

--- Comment #2 from Bertil Rolf  ---
8.5.0


Build date: 2024-08-29 16:21 (target: RelWithDebInfo)
Revision: 7141aca20964a7f17ef5e678c785c83056e51c57 



BR


On 2024-10-13 10:08, bugzilla_nore...@kde.org wrote:
> https://bugs.kde.org/show_bug.cgi?id=494640
>
> caulier.gil...@gmail.com changed:
>
> What|Removed |Added
> 
>   CC||caulier.gil...@gmail.com
>Component|BatchQueueManager-Core  |Plugin-Bqm-DngConverter
>
> --- Comment #1 fromcaulier.gil...@gmail.com ---
> Which digiKam version did you use ?
>

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[digikam] [Bug 494640] DNG conversion from CR2

2024-10-13 Thread bugzilla_noreply 
https://bugs.kde.org/show_bug.cgi?id=494640

caulier.gil...@gmail.com changed:

   What|Removed |Added

 CC||caulier.gil...@gmail.com
  Component|BatchQueueManager-Core  |Plugin-Bqm-DngConverter

--- Comment #1 from caulier.gil...@gmail.com ---
Which digiKam version did you use ?

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