Ender100@aol.com
Date: 09/04/03-10:39:09 AM Z
Gord, you could take the top off the scanner and flip a light table upside
down...I'm sure there are other ways to do it though to get even lighting. The
biggest problem may not be the lighting, but rather keeping the negative
flat.... however, I would bet that there is a way to use a gentle vacuum to do
this, where you seal the edges of the negatives with non-stick (oxymoron) tape
and use something like a fish tank pump with a gentle vacuum. Then your next
hurdle is then is the dreaded Newton Rings associated i believe with the
refraction caused by the light passing through two adjacent surfaces, the glass and
film stubstrate—if this is a problem, you can use Kami Fluid to "oil mount" or
there are etched glass carriers that help with the problem. Have fun.
Mark Nelson
In a message dated 9/4/03 11:16:08 AM, holtsg@duke.usask.ca writes:
> I wonder if its possible to make a scanner use a larger transparency
> adapter than the manufacturer intended.
>
> The adapter merely provides a different (transmitted) light source rather
> than the scanners internal source for reflected light.
>
> We have a small epson transparency adapter. Out of curiosity I took it
> apart. All that is inside is a very small lighting filament and a set of
> reflectors and diffusers to provide a diffuse even lighting.
>
> If one could determine the approximate lighting level, and get the scanner
> mechanism to travel a greater length in transparency mode it might be
> possible to get a scanner to do big transparancies.
>
> Who wants to do experiments with their expensive scanner :)
>
> Gord
>
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