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     áòèé÷ :: Filmscanners
Filmscanners mailing list archive (filmscanners@halftone.co.uk)

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[filmscanners] RE: Avoiding Newton rings



The trouble is that if you have a badly curled piece of film, it's likely to
be curved so that you need to press the shiny side against the glass in
order to flatten it out.

What about using some kind of fluid between the two, matching the refractive
index of either the glass or the film substrate? Like the goop they use in
drum scanners? Is that ever done in slide mounts?

--

Ciao,               Paul D. DeRocco
Paul                mailto:pderocco@ix.netcom.com

> From: David J. Littleboy
>
> "Anthony Atkielski" <anthony@atkielski.com> wrote:
>
> > Maybe I can try always facing the convex side of the film towards the
> > anti-newton glass, if it isn't already quite flat, even though this
> > means scanning some strips backwards.
>
> I just had an image that had noticeable Newton's rings, but was ring-free
> when scanned upside down. Sharpness was fine.

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