When comparing DigiKam vs LightZone, the Slant community recommends LightZone for most people. In the question“What are the best FOSS RAW editors?” LightZone is ranked 3rd while DigiKam is ranked 4th. The most important reason people chose LightZone is:
Unlike most other RAW editors, LightZone supports user-created RAW profiles and allows editing existing RAW profiles.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Built-in versioning system
Pro Built-in facial recognition support
Pro Allows users to create and edit RAW profiles
Unlike most other RAW editors, LightZone supports user-created RAW profiles and allows editing existing RAW profiles.
Pro Allows changing the order in which adjustments are applied
You can change in what order sharpening, saturation, tone, etc adjustments are applied simply by switching around their order in the tool stack.
Cons
Con Facial recognition can crash the program
Con Asset management is basic
Browser module includes a file browser, metadata viewer and a really basic metadata editor (allows editing just 6 fields), and allows you to give images a rating, but no advanced asset management is supported. There's not even a way to assign keywords to files.