There is already option Settings -> Configure digiKam -> Editing Images -> In main view -> Always show original images / intermediate snapshots. But it works only when processing raw files manually in editor. It will be great if digiKam can automatically group all versions of each image in album view. With such feature you can forget about thinking where to store raw files. Reproducible: Always
I wrote a rudimentary script that adds the applicable info to a pair of raw and processed files. It sure would be nice if digikam were smart enough to figure this one out on its own, though. However, I've found that versioning is flaky at best. When I add a batch of new files with metadata showing the DNG as version 1 and the JPG as version 2 it often takes a bunch of reloads to get the versions to show up.
*** Bug 472883 has been marked as a duplicate of this bug. ***
*** Bug 472884 has been marked as a duplicate of this bug. ***