Re:GRAIN/ICE SHOWDOWN: Nikon LS8000 vs. Minolta Scan Multi Pro!

[rafe.bustin@xxxxxxxxxxx]

On 7 Apr 2002 at 17:54, david/lisa soderman wrote:

> When I find time, I'll try the "defocusing" idea - even though I think it's
> preposterous to need to do so on such a costly box.
> Also, I would like to point out that the "crud"/grain/noise is still
> present...even at lower resolutions like 1600ppi.  I don't know if I'll have
> time to illustrate that though.


Have you considered that the "grain" you speak of might 
be a form of posterization?  

This can be particularly annoying with underexposed print 
film.  Just a wild guess, is all.  But it might not be so much 
the dreaded grain aliasing that others have mentioned; 
there are other possible explanations.  One is extreme tonal  
compression/decompression, which leads to posterization, 
which often looks like grain.


rafe b.

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