So, it's best if you send one trial reference file exported from dt to your friend to make sure he has no problems with compression, embedded profiles or lost metadata.

However, when I open the same files in Affinity Photo the embedded Rec2020 is not recognized in any of the files and ProPhoto RGB (my default working profile) is substituted, which results in dark files - clearly this looks like a bug in Affinity Photo. The most economical option is to use the 'deflate with predictor' tiff compression method. Some programs don't like compressed tiffs, but my Photoshop Elements has no problems with any of the compression options in darktable. but I don't see DNG as available for export.Īm I correct in my assumption, that TIFF with 16 bits per color (compressed with -9 for easier transportation over the network) is the best viable alternative? Or am I missing something?ġ6-bit ProPhotoRGB or Rec2020 Tiff is your best bet.

What is the optimal lossless format for this purpose? I thought DNG.

Darktable photoshop