I'm new to this board and I just responded to a question about solving Newtons r ings when scanning negs/trannys on 'consumer' flatbed scanners. I then saw this was a common problem people were having and I decided to post the method I have used to solve this perenial problem! Quite simply replace the standard glass in your scanner with some non reflective picture frame glass and sandwich your film with with another plate of the same on the top! Non reflective glass has a 'very' fine etched surface on one side - this eliminates Newtons rings very effectivley. Most film adaptors hold the film away from the glass but I still find that under the heat of the lamp they bend and touch the glass - additionaly most scanners are focused on the glass surface so any seperation of the film from this undesireable. I have not managed to pic k up the 'etching' as a texture on my scans but I managed to get a couple of ch oices at the framer's and chose the least etched. I did this mod to an Epson 1640SU - the glass was held in place with some double sided sticky tape and was simple to get out. If anyone has one of these (or the 1200 range which shares the same chassis) and wants to do it they can e-mail me and I will give them the glass sizes and a 'trick' to get the top off without f ouling the head.