If you have a scanner that uses a fluorescent tube, rather than LEDs
to illuminate the object, then you should aim to scan as much as
possible with the middle of the fluorescent tube. The reason for
this is that the tube's characteristics change most nearest the ends
of the tube, especially if it has been used a lot. So, with a
fluorescent scanner, put the photo in the centre of the platen with
the photo's long axis running down the platen. In that way you use
the smallest width of fluorescent tube, and the bit you use is the
middle bit.
Scanning a full-size piece of really white paper will often show up
the way in which fluorescent tube characteristics affect a scan.
--
thanks for this information
much appreciated
--
gary dorn
north perth
