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RE: filmscanners: Minolta Dual II and Green channel noise

No, I've never had that, or frankly, any other problems with my Scan Dual
II, and have been able to use both the Minolta and Vuescan software to make
successful scans, though Vuescan is far more flexible.

Norman Unsworth
Management Specialist
w: 609 645 7700 x4527  f: 609 645 5891

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> -----Original Message-----
> From: owner-filmscanners@halftone.co.uk
> [mailto:owner-filmscanners@halftone.co.uk]On Behalf Of Arthur Entlich
> Sent: Thursday, July 12, 2001 6:20 AM
> To: filmscanners@halftone.co.uk
> Subject: filmscanners: Minolta Dual II and Green channel noise
> Norman Unsworth wrote:
> >
> > I too have a Scan Dual II and never had a problem using it with Vuescan.
> > It's always found the scanner, no problem. However, I need to
> make sure the
> > scanner is on first, then fire up Vuescan.
> >
> > Norman Unsworth
> >
> For the last week, I have been playing with my finally acquired Minolta
> Dimage Dual Scan II.
> Unfortunately, it is going back to Minolta for repair or replacement,
> because it has a bad CCD (streaks, weak or failed CCD elements)...
> However, there is one aspect that concerns me even more than that, and I
> am trying to determine if this is a result of a bad production run, or
> bad software, or what.
> In all the reviews I read, and test scans I seen, one of the areas this
> scanner seemed to stand out in was having very low shadow noise.
> However, in my brief experimentation with the one I had, it exhibited
> severe noise in the green channel.   I'm speaking of noise that was
> severe enough that it showed up in Epson prints as speckled green spots
> throughout any dark area, and after sharpening with unsharp masking, it
> was even worse.
> I found this true with slides which were properly exposed (in shadow
> areas) and even moreso in cases of slightly underexposed slides.  I did
> not test it with color film.
> However, I did test it with Vuescan rather than the supplied Minolta
> software, and surprise, almost all of the green channel noise went away.
> So, I am wondering if others have noticed this.  Is the only answer
> around this to use Vuescan, or has there been a run of bad CCDs in these
> scanners (I have been in contact with other Canadians who also
> noticed this, so maybe a whole run is bad?)
> I do not recall hearing of this problem being discussed previously,
> which is why I am wondering if the problem is a new one.  The green
> noise, BTW, is worse than what I had with my HP S-20, which was not
> exactly without noise, and in fact, was traded in to get the Minolta.
> I should have a "new" Minolta in a week or so (it's "flying" to them
> tomorrow), and hopefully it will not exhibit the same problems.
> Rather disappointedly,
> Art


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