> From: Arthur Entlich > > Well, that's hard to say without knowing the extent of the ripples and > which model scanner you are considering. > > How much distance are we speaking about between the upper most and > deepest ripple? Are we speaking of potato chip ripples or what? ;-) > > I have a Minolta Dimage Dual II and a Polaroid SS 4000+, and if you give > me some dimensions, I can try to replicate it and see what they can do > with it. Also, have you tried to remount the slides to see if they can > be made to lie more flat?
It's hard to measure, but just eyeballing it, I'd say that I have easily a millimeter of warpage on some of them. And it's not necessarily a smooth domed curve from one edge to the other--some slides have ripples down one edge. (Although a simple curve of sufficient magnitude would be an adequate DOF test.) I've remounted slides in anti-Newton glass mounts, and got somewhat better focus, but noticeable grain from the glass. However, there are two problems with remounting. First, it's extremely time-consuming. Second, some of the slides have ripples in them that even glass sandwiches won't take out. I really think that increased DOF is the only way I'll ever get decent files out of these. -- Ciao, Paul D. DeRocco Paul mailto:[EMAIL PROTECTED] ---------------------------------------------------------------------------------------- Unsubscribe by mail to [EMAIL PROTECTED], with 'unsubscribe filmscanners' or 'unsubscribe filmscanners_digest' (as appropriate) in the message title or body
