[filmscanners] RE: Noise in Polaroid SS 4000 scans

["Alessandro Pardi" <alessandro.pardi@inferentiadnm.com>]

Hi Harry,

to rule out the possibility that the problem is the film you can shoot a
test roll of a good 100ASA film: Kodak Supra, Fuji Reala or Superia should
all be so far from the grain (assuming it's grain) you see that it would be
immediately clear whether the problem is in the film or in the scanner.
In the meantime, a major difference between noise and grain is that noise is
random: so if you use the multiple pass option of Vuescan noise should be
greatly reduced, whereas grain would remain substantially unchanged.

Alessandro

> -----Original Message-----
> From: Harry@vdKrogt.nl [mailto:Harry@vdKrogt.nl]
> Sent: Wednesday, June 11, 2003 11:11
> To: alessandro.pardi@inferentiadnm.com
> Subject: [filmscanners] RE: Noise in Polaroid SS 4000 scans
>

<snip>

> I am a bit surprised to see that the opinions are so different, grain
> versus noise.
> What can I do to make a more definite test? Make scans at 4000 dpi and
> put them on the page? That would mean even more bandwith.
>
> Harry
>

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