Digital BW, The Print

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, grdglass@a... 
wrote:
> This is interesting because I have never been able to make a B+W 
print from a 
> color digital capture that had the look of a print from B+W film.  
I believe 
> I have tried every method and every plugin and the print never 
looks "real."


Let's not get all mystical about it.   The response curves for all 
their films are available from Kodak.  A response curve is a vector 
of scalars.  It should be simple linear algebra to take two response 
curves and come up with a third curve that represents the conversion 
of one to the other.   The only case that would fail is if the 
target response curve had a wider latitude than the source one.  So 
if you start with a wide latitude color film why should it be hard 
to simulate a b+w film of similar or narrower latitude?