By using 1 mm thick magnetic vinyl as used
in the sign industry it is easy to cut holders for film
that can't be mounted in the holders delivered by Epson and other
scanner manufacturers.
The 1 mm thickness keeps the film at approximately best focus of the
scanner. Newton rings that
could appear with the film in contact with the glass isn't a problem
with this concept and the mask
itself reduces flare from the light above. The vinyl clamps the film on
all sides. Two sided tape is
used for the hinge at the right side. The calibration slit is cut at
the top. A polycarbonate template
with the maximum Epson 3200 window size is shown in the second image.
Another use for it is with high gloss
reflectant originals like the SX70 photos. Usually
they give
Newton rings as well on the glass. Lifting them 1 mm above the glass
surface they are perfectly in
focus. The last image shows the SX70's enclosed in the mask
