Digital BW, The Print

Paul Roark wrote:

> Martin wrote:
>
> >I found that Museo coated better than any other paper I tried. If you 
> coat
> >it you will not need to worry about the blacks. Uncoated I read densities
> of
> >about 1.46 to 1.48 in the deepest shadows and on the same print 
> coated with
> >Golden materials I get 1.89 to 1.91. On selenium toned Ilford I read 2.1.
>
> I just sprayed some EAM with Lyson Print Guard to see how it affects the
> fade/warm-shift in testing.  I actually measure lower Dmax on EAM with the
> sprayed papers.  Any idea why the blacks are going the other direction 
> from
> what you are measuring on Museo?

1)  The spray may be increasing scattering and reflectivity of the 
coating used in the EAM..

2)  Pigment may actually migrate into the spray.. if that happens, the 
physical density (per volume, not optically) of the pigment would 
axiomatically drop.. since you would then be passing through pigment 
over a further distance, the chance of scattering and reflection as 
light passes through the suspension will increase.. That would decrease 
overall Dmax.  

If the latter is the case, laying down extra pigment on higher density 
areas (when a print is intended to be sprayed) should help...  In the 
former case it probably would not help to lay down more ink

>

[Keith]
 
 




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