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

[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]

To: ramarren@apple.com
Subject: Re: regards digital storage
From: pgs@thillana.lcs.mit.edu (Patrick Sobalvarro)
Date: Sun, 7 Jul 1996 23:31:39 -0400
Cc: leica-users@mejac.palo-alto.ca.us

   From: Godfrey DiGiorgi <ramarren@apple.com>
   Date: Sat, 6 Jul 96 00:43:18 -0700

   There seems to be a couple of minor things lacking in this discussion of
   archival images through digital storage means.

   1) No scan or CCD generated image is of the quality that an original 35mm
   negative or transparency is at the present date. The picture elements 
   (pixels)
   of a piece of 35mm film is orders of magnitude greater than the best 
   scanning 
   equipment can achieve right now (2750-3600dpi seems to be the maximum of 
   available equipment). 

Actually, the Leafscan 45 is good for 5000 dpi at 16 bits per channel.
Given that even good 35mm lenses resolve only about 150 line pairs/mm,
this is pretty durned close to what you can expect to do with your
35mm camera.  It costs $17,000, but the price for this technology is
falling quickly.