results of experimentation with paper direct reversals show that film developer used on paper develop fog where paper developer does not. Now--this being the case--would the paper developer also develop less fog on regular film, or is film different from paper in the fog-wise sense so that it is much less sensitive to fog? it would appear that all thing being equal, paper deveoper will be able to develop older film say or do reversal with more detail/dmax.... any ideas on this anyone? experiences? whys and wherefores?