Archived posting to the Leica Users Group, 1996/07/07

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To: leica-users@mejac.palo-alto.ca.us
Subject: Re: Film choice: Durability...
From: pgs@thillana.lcs.mit.edu (Patrick Sobalvarro)
Date: Sun, 7 Jul 1996 23:12:49 -0400

Actually, if you are using scanned images as your archives, you should
not worry about the durability of electronic media.  The medium
(magtape, CD, etc.) on which your digitized photographs are stored
does not have to last as long as you want the photographs to last!  It
only has to last until the next generation of digital media.  Then you
copy the digitized photographs from the old medium to the new medium.
With very high probability, the copy is every bit as good as the
original digitized image.  That's the magic of digital media and
error-correcting codes and all that stuff.  It's not like making an
analog copy (like an internegative).

Also, the copying is not expensive, because (a) the digitization is
what cost money -- copying files on a computer costs very little, and
(b) the digital storage that your photographs occupy will be much much
cheaper by the time the next generation of digital media comes along.

-Patrick Sobalvarro

Replies: Reply from James J Dempsey <jjd@k12-nis-2.bbn.com> (Re: Film choice: Durability...)