When I used RawTherapee I liked it, but I found the interface a bit opaque. The exported jpegs were not what I saw in the application, which in turn was not what I expected to see given the source and the modifications I had performed. I am absolutely sure there were good reasons for this, but I never took the time to figure out what they were.
In contrast, with Darktable, only once have the final output not matched my expectations, and then it was immediately obvious that I had accidentally changed the colour space of the output and my image viewer assumed sRGB – this was a two-click fix in the export tab.
In contrast, with Darktable, only once have the final output not matched my expectations, and then it was immediately obvious that I had accidentally changed the colour space of the output and my image viewer assumed sRGB – this was a two-click fix in the export tab.