[filmscanners] Re: Avoiding Newton rings

["Arthur Entlich" <artistic-1@shaw.ca>]

I think how obvious the anti-newton ring "texture" in the glass or
plastic depends on the lighting source in part, but most importantly,
the magnification ratio.  When scanning a 35mm or 6x6cm film, the
scanning resolution is 2700-4800 dpi, while I don't suspect your are
scanning a 4x5 or 8 x 10 transparency at that type of resolution (unless
you want a several gig file).

I'm unfamiliar with anti-newton ring plastic.  How thick is it?  Is it
flexible?  How do you avoid scratches and static?

Art

Tim Atherton wrote:

> using plastic/mylar type anti-newton sheets on 4x5 and 8x10 transparency
> scans on my flatbed it doesn't seem to add texture or suchlike (and the
> sheet is between the scanning head and the image). There maybe some very
> slight softening, but I've done side by side comparisons and couldn't really
> tell - but I'm sure the big neg helps.
>
> tim
>
>


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