"create HDR" leads to magenta-cast image
Creating an HDR from three DNGs leads to an incredibly purple/magenta image. Originals and resulting are uploaded here:
A JPG export of the resulting HDR is attached.
Possibly a dupe of https://redmine.darktable.org/issues/11620, opening a new issue because I'm merging three DNGs instead of trying to make an HDR from a single image.
#2 Updated by Sebastian Bachmann 5 months ago
I can reproduce this problem with all images made with a Canon 5D mk II but not with NEF images from a Nikon D200 or CR2 from a Canon 350D.
The 5DmkII has 14bit RAW, while both other cameras have 12bit RAW. Is it possible that the HDR does not work with 14bit images?
I tried to convert the 5D CR2 images into TIFF or EXR but with both the HDR function does not work.
#3 Updated by Sebastian Bachmann 5 months ago
A short update: I used some images of a Canon 60D, which should also have 14bit RAW and those images does not look purple but have some red-ish tone... But I do not have actual bracketed HDR shots available from this camera and I do not own this camera anymore, so I can not test it with real shots.
But I also have a Canon M3, which should have 14bit RAW as well - in this case the HDR works fine, I just tested that.
So it looks like the only RAW files which does not work are those of my 5D MKii.
Here is a series of +-2EX images: https://files.reox.at/darktable_hdr plus the resulting DNG.