export DNG processed image

Software darktable
1

Hi,

Newbie here - so apologies if this is a dumb question…

After an initial import, and before processing an image in Darkroom, the Lighttable view shows what looks like a processed image. I assume this is a camera processed view of the image embedded in the DNG file along with the raw image data.

If this is correct then it seems there should be a way of exporting this camera processed image from within Darktable. Is there? A lua script would do if it’s not built in to Darktable itself.

Wouldn’t that save me having to store JPEG+DNG images on the camera (and in Darktable) for those many ocassions where I initially just want a simple snap of the event, but with the option to further process the image if I deem it worthwhile.

Thanks in advance.

2

That depends on the camera. Some only embed a low resolution JPEG, while others embed full resolution, but low quality, while others again embed according to JPEG settings.

3

And you can extract the camera jpg with a simple command from exiftool or exiv2.

4

Thanks - you pointed me in the right direction.

For anyone else interested:

   exiftool -a -b -W %d%f_%t%-c.%s -preview:all ./*.DNG

gives me all the preview images present from all the .DNG files in the current directory.

Thanks again.