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filmscanners: Avoiding Posterization
I've been scanning b&w negs in Vuescan, basically using the default
settings, and every so often I get a little posterization in the dark areas
of negs with a really extreme range of lights and darks. What is the best
way to avoid this? Increase image brightness (eg., from 1 to 1.2)? Raise
the black point (BTW, how does one do this? Change it from 0 to -.01 for
example)? Adjust the media settings? Anyone have a preferred method?
Perhaps it's not a problem; is it ok to have some 0 values in an image? I'm
experimenting, but an experienced opinion would be very helpful.
STEPHEN JENNINGS
P h o t o g r a p h e r
Cambridge, MA
sgjennin@ix.netcom.com
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