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Re: filmscanners: Anti-Newton Rings powder
>
> >
> >> They might also use an Anti-Newton Rings powder on the
> >> glass between it and the subject being scanned.
> >
> > Sorry for my ignorance....What is 'Anti-Newton Rings powder'?
> >
> When you place two flat surfaces together, you get a form of banding known
> as Newton Rings that represent the different transference of light between
> the surfaces due to the pressure. Glass slides, and even enlarger glass has
> been coated for years with a transparent substance that prevents flat/flat
> contact, spacing the two flat surfaces just far enough apart to prevent the
> pressure banding.
So are you saying that one can make their own anti newton glass by getting some
of this 'Anti-Newton Rings
powder'?
Harvey Ferdschneider
partner, SKID Photography, NYC
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