
As I blathered on... I'm hitting heavy with a nikon d-600 with a raw file edited in gimp-2.9.1 which is not even a beta release yet (you'll have build in linux from source files). The prize with this version of gimp is the ability to edit in 16 bits... so this raw file is a 14 bit image to begin with... and the 16 bit editor lets me manipulate to my heart's desire.
John.