Message-Id: <mailto:199408241858.NAA24678@library.wustl.edu> Date: Wed, 24 Aug 1994 12:54:21 EDT From: Bob Henneberger <mailto:BHENNEBE@UGA.CC.UGA.EDU> Subject: Re: Re[2]: More digital resolution... To: Multiple recipients of list IMAGELIB <mailto:IMAGELIB@ARIZVM1.BITNET>
If microfilm is processed and stored according to ANSI/AIIM standards, it does have a LE (life expectancy) of 500 years. Right now, our library is scanning the map collection from our rare books and manuscripts collection. First we make a microfilm negative, then scan the negative at 2400dpi. The tiff size is about 3 meg, and the jpeg size is about 500k. The microfilm negative collection may well outlast the original maps, and presents much fewer long term storage and retrieval problems than their digital counterparts. I'd like to see more discussion on the film/scanned image approach versus only digitally stored approach.Bob Henneberger INTERNET:mailto:bhennebe@uga.cc.uga.edu Computer Services WWW:scarlett.libs.uga.edu Preservation services Compu$erv:73727,2615 University of Georgia Libaries Voice: 706-542-2131 Athens, GA 30602 FAX: 706-542-4144