Panasonic GX8 not showing up in Lens Correction

Software darktable
1

Hi!

I am using darktable 2.0.7. Googling shows The GX8 has been supported since v2.0 Dec 15 but when I go to Lens Correction, the camera isn’t listed. Do I have to anything additionally for it to recognize this camera?

Thanks!

Kev

2

Lens Correction is handled by lensfun, and you can ask @bronger to add support by suppling him the needed photo’s at http://wilson.bronger.org/calibration

3

I think for cameras you don’t even need to send any files, only the camera
info.

http://lensfun.sourceforge.net/manual/addcamera.html

4

Ah yes, that would suffice. I assumed a GX8 was a compact camera, not a m43 one.

5

Thanks for the help! I found the xml files I needed at /usr/share/lensfun. I added the camera and darktable recognized it right away.

I was playing around to see if I could add my Lumix 35-100/f4.0-5.6. It is profiled at lensfun (not completely) but it is not in the database; I downloaded the latest from sourceforge too.

Anyway, I just copied the entry for the f2.8 version and changed the tags to suite. I know this isn’t the right way to do it but I wanted to create a new entry and see if darktable would recognize the lens. It doesn’t. darktable doesn’t create a new entry in the dropdown for it. Is there another process for getting new lens data recognized?

Kev

6

@calgarykev editing directly in the /usr/share/lensfun is the quickest way (and I do it all the time) but an update will reset it and require you to change it again. Take a look at this on to store the database files in the local folder, it can also work great to get new versions of the parameters with needing a new version:

http://lensfun.sourceforge.net/manual/dbsearch.html

8

@t3mujin Thank you for the info! I’ve installed darktable from ppa, not
compiled. I note that I don’t have the alternate paths in your link but I
did find the problem.

I copied the panasonic data file from the sourceforge files. For some
reason the camera section reads fine but the lens section did not. I
copied back my original version and edited it and the lens showed up right
away.

Not sure why the data for the smaller 35-100 is not in the source database
but I have emailed Torsten to see if he has it. It is listed on bronger.org
but not on lensfun. I will see what he says. I would like to learn how to
profile a lens myself but the process on his website looks over my head.

Thanks!

Kev