Hi Julie, You might look at local guidelines, such as (ours): CDL guidelines for digital images, version 2.0: November 2005 (http://www.cdlib.org/inside/diglib/guidelines/bpgimages/cdl_gdi_v2.pdf) or broader guidelines such as those at NARA: Technical Guidelines for Digitizing Archival Materials for Electronic Access (http://www.archives.gov/research/arc/digitizing-archival-materials.pdf) for ideas.
They give some useful, well-grounded guidelines based on material types for setting dpi, etc. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Mary W. Elings Archivist for Digital Collections The Bancroft Library University of California MCN Standards SIG Chair Adjunct Professor School of Information Studies Syracuse University At 03:32 PM 11/21/2006 -0600, Julie Grob wrote: >Hello, > >We are about to begin scanning a large group of early 20th century >negatives. They are about 3.5" square. We will be creating master TIFFs of >course, but we would like to be able to print larger than 3.5" images. Is >it better to scale up and scan them at something like 200%, or to increase >the resolution from 600 dpi to a higher dpi? > >Thanks in advance, >Julie Grob > > >Julie Grob >Digital Projects and Instruction Librarian >Special Collections >114 University Libraries >University of Houston >Houston, TX 77204-2000 >(713) 743-9744 >jgrob at uh.edu > >_______________________________________________ >You are currently subscribed to mcn-l, the listserv of the Museum Computer Network (http://www.mcn.edu) > >To post to this list, send messages to: mcn-l at mcn.edu > >To unsubscribe or change mcn-l delivery options visit: >http://toronto.mediatrope.com/mailman/listinfo/mcn-l > >
