A few general points about what resolution to scan at:- 1. The end purpose is one deciding factor. As one correspondent said if an image is only going to be printed at n dpi then ostensibly it is not worth storing at a higher density. However, what if one gets a better printer later on? Maybe better be prepared and scan/store at a higher resolution from the beginning rather than re-scan. 2. If one is 'archiving' for preservation, i.e. making a digital copy that could be considered to be an equal to the original then the resolution must be at least equal to the original. That is not always easy to ascertain as there is not an exact digital resoltuion equvalent for any analogue format but some can be estimated by calculation. For example, if we say modern colour film resolves at 150 lines per millimetre (lpm) and to allow for dye cluster edges one needs to scan at least at double that resolution then we need to scan at something like a minimum of 7,600 dots per inch. 3. Why not scan multiple resolutions? One written away to CD-R as an archival copy with perhaps a duplicate kept physically separate and a lower res working copy kept on-line. Perhaps also a thumbnail version? (The thumbnail requirement may go away as we move to JPEG-2000). 4. Put the scanning details along with the other metadata regardless of what program you are using to keep the catalogue. You may one day want to do a search for all images canned at less than a certain resolution in order to re-scan them on newer better equipment. I work with digital archives for stills, audio, television and film and most of these rules apply to all these types of digital object. A modern concert hall recording may be made at 192 kHz with 24 or 32 bits but it is not worth using that level of quality to make a copy of a wax cylinder! Tom.