Digital BW, The Print

On Fri, 2003-12-12 at 22:11, hogarth wrote:

> On Fri, 2003-12-12 at 21:20, Paul Roark wrote:
> 
> > Mitch,
> > 
> > >>  Easy-to-make prints with a higher dynamic range than the silver print 
> > >> are hard to resist.
> > 
> > >Which method are you referring to? Can Ultrachrome inks (Photo Black 
> > >with, say, Semi-Matte) give a longer tonal range than a silver print -- 
> > >and equal the Dmax?
> > 
> > I think that with the right barrier-type paper, perhaps Epson Premium
> > Semi-matte (or other paper that Wilhelm has "blessed"), the dynamic range
> > can exceed the silver prints I was doing.
> > 
> 
> 
> Why does it have to be a "barrier-type" paper? I don't understand how
> the paper substrate effects Dmax. How does that work?
> 


Paul? Anyone? How does a barrier-type paper effect Dmax?


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