Originally Posted by
lukaswerth
DNG or whatever, there is another use of the term, and it's not meaningless: "digital negative" refers to a printout in negative form (highlights dark, shadows bright), mostly on overhead foil (Mitsubishi's pictorico is often used for this) which is needed in order to get an analog print as final result, either on b/w paper, or on a hand-coated emulsion, as it is done with platinum/palladium prints, kallitypes, cyanotypes, chrysotypes, gum prints, oil prints...
A digital negative is mostly made in the size of the intended print (for contact printing, that is), and is also a very good interface for original analog negatives (which you would need, for instance, for pinhole work which cannot be done very well digitally). There are different methods to make digital negatives, it's an art in itself.
Lukas