[filmscanners] Re: Avoiding Newton rings

["David J. Littleboy" <davidjl@gol.com>]

"Anthony Atkielski" <anthony@atkielski.com> wrote:
>>>>>>>>>>

I think I see part of the problem:  Provia is shiny on both sides--no
visible emulsion on either side.  Apparently the emulsion side is coated.
Maybe that's why the rings turn up.  I wonder why Fuji does that.
<<<<<<<<<<

The Provia here has a noticeably relief pattern (matching the image) on the
emulsion side. Try looking more closely with the light glancing off at a
shallow angle. (I'm nearsighted (-8 diopters worth), so you may need a loupe
to see the relief pattern.)

>>>>>>>>>>>
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 know that some strips look fine, but
others have a definite problem with rings.  I assume that curvature of the
film or something is getting in the way.
<<<<<<<<<<<

I just had an image that had noticeable Newton's rings, but was ring-free
when scanned upside down. Sharpness was fine.

David J. Littleboy
davidjl@gol.com
Tokyo, Japan



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