Thanks for the suggestion! I tested it on one file. Support for the format might turn out to be a problem: to use the flif command line tool, I had to convert m

Thanks for the suggestion! I tested it on one file. Support for the format might turn out to be a problem: to use the flif command line tool, I had to convert my input file from TIFF to PNG first, which means I'd have to be extremely careful not to lose metadata if I started doing this for real. It was also pretty slow. File sizes (DNG lossless, other formats 16 bits): * DNG: 18.5 MiB * TIFF: 84.2 MiB * FLIF: 55.1 MiB So while FLIF is unsurprisingly much better than TIFF, it's still ~3 times larger than the DNG, which means that a pretty noticeable amount of additional disk space would have to be sacrificed to store the final edited versions of all my photos.