Guido H , Jun 28, 2009; 03:29 a.m.
The LiDE 80 is a very basic scanner which produces only modest tonal range and resolution by today's standards. Its film adapter is suitable for strips of 35mm negative or slide film only; there is no way to scan transparencies or larger formats. Even the 35mm scans don't really look good.
For your application, I would recommend a better scanner along the lines of the Epson V700/V750, which has a full set of film holders for 35mm, slides, medium format, and 4x5", plus a holder for negatives of non-standard size.