What happend with my Dual ISO files and darktable?

Peter · February 12, 2018, 9:48am

I checked some pictures from 2015 and I found two issues.

corrupt “boxes”
Couldn’t match white balance or something like that

I copied the raw files into an new folder so that not the cache would interrupt, but same.
I opened the raw files with RawTherapee with no issues.

Sk%C3%A4rmbild%20fr%C3%A5n%202018-02-12%2010-42-00

_MG_9400.DNG (24.1 MB)
_MG_9395.DNG (22.0 MB)
_MG_9401.DNG (22.4 MB)

darix · February 12, 2018, 10:20am

Which camera? Are those DNG generated by the camera or converted?

Thanatomanic · February 12, 2018, 10:22am

This might be related to this bug report

I hope the developers will attack the underlying issue at some point.

Peter · February 12, 2018, 10:36am

Canon 6D and Dual ISO. Most of the pictures are shot at ISO 100/800 so the half raw file is 100 and the other half 800. Then I convert CR2 to DNG with cr2hdr and merge ISO 100 and ISO 800. Dual ISO - massive dynamic range improvement (dual_iso.mo)

First time I got an issue with this.

LebedevRI · February 12, 2018, 11:32am

@Peter
Can you please try opening them in older darktable (2.2.5)?
Make sure to do so from new user, else you will have problems with DB versions.

Yes, it might. I’m working on that one…

Peter · February 12, 2018, 5:38pm

It will take a while before I get back to the computer. A day or three.

Peter · February 14, 2018, 10:41am

I downloaded 2.2.5 for OSX and tried. Worked. Easier than to create a new user on my Ubuntu machine.

LebedevRI · February 14, 2018, 11:37am

Ok, that is good, thanks for testing!