rafe b wrote:

Tried this on a 4990 and results were awful.

Here are two strips of BW 35 mm scanned as reflective material:
http://www.terrapinphoto.com/bw/trix_flatb.jpg

Here are the same two strips scanned as transparencies:
http://www.terrapinphoto.com/bw/trix_transp.jpg

These are both straight off the scanner with
no manipulations in Photoshop other than
scaling and conversion to JPG.

Bottom line: not enough light reflecting off
the white background. rafe b


Are you sure they are "awful" ? That is a Max D 4
machine. Even at double density a good Max D 3 should
do for many negatives. BTW, those white backers I looked
at were every bit as white and bright as any
baryta I've seen. Dan