Bug 394671

Summary:	Distortion on Panasonic DMC-LX15
Product:	[Applications] digikam	Reporter:	René <raziel>
Component:	Preview-RAW	Assignee:	Digikam Developers <digikam-bugs-null>
Status:	RESOLVED WORKSFORME
Severity:	normal	CC:	metzpinguin
Priority:	NOR
Version First Reported In:	6.0.0
Target Milestone:	---
Platform:	Arch Linux
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:	6.0.0
Sentry Crash Report:

Description René 2018-05-25 13:50:44 UTC

When opening a .rw2 file from my new Panasonic DMC-LX15, the preview (if the embedded preview is disabled) looks distorted (a little bit of a fisheye effect). The JPEG files generated on the camera do not have this problem.

After searching a while to understand what actually happens, it appears that the lens correction is either wrong or not applied at all.

I also updated the lensfun data with lensfun-update-data, since it is only listed in the development notes of lensfun. I can see the definitions in .local/share/lensfun/updates/version_1/compact-panasonic.xml for this camera / lens.

I tried with Digikam 5.9.0 and 6.0.0.

What can I do to track this down further?

Thank you

Comment 1 Maik Qualmann 2018-05-25 15:36:25 UTC

What's your question? DigiKam does not automatically apply the lens correction in the preview. If you look a RAW image you can see how the camera took it, with all the errors from the sensor and lens. In today's compact cameras, the RAW images are not useful without intensive post-processing. You can open the RAW image in the image editor and apply the lens correction tool and further develop the RAW image.

Maik

Comment 2 René 2018-05-25 16:50:12 UTC

Oh in this case I made a false assumption.

With my DSLR I never experienced something like this, so I though DigiKam was just automatically correcting it.
So I guess this is not the case at all, so I will probably go with JPEG with this camera.

Thank you very much for the explanation.