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Re: filmscanners: Anti-Newton Rings powder
Yes. Alternately, some use mounting fluid such as is used for drum
scanning.
Maris
----- Original Message -----
From: "SKID Photography" <skid@bway.net>
To: <filmscanners@halftone.co.uk>
Sent: Thursday, August 30, 2001 12:30 AM
Subject: 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
|
|
|
|
