The German Research Association (DFG) is actively involved in preservation of research materials; it takes the view that in preservation, the enormous potential of digitization for access should be combined with the stability of microfilm for long-term storage. A working group was convened to investigate the technical state of digitization of microfilm and the changing compatibilities of microforms and digital conversion forms. This report documents the state of development and offers recommendations to serve as technical and organizational guidelines for filming and conversion projects (particularly those in the public domain). Chapters in this report are: (1) Should Endangered Books and Archives Be Filmed or Digitized?; (2) Requirements for Film Quality and Film Organization with Reference to the Option of Film Digitization; (3) Recommendations for the Digitization of Microfilm; (4) Microfilm and Digital Storage Formats as Compatible Media; (5) Digitizing from the Original; and (6) Cooperation and Exchange of Information; and (7) Suggestions for Further Reading. (AEF)