[photo-3d] Ultra Hi resolution digital photography with scanner technology

["Franklin J. Flocks" <fjf@xxxxxxxxx>]

       On April 6, 2001, Brian Reynolds wrote:

       "The scanning backs for 4x5 cameras can currently just about 
       match half-frame 35mm film.  The actual image size of the 
       sensing surface (usable area) is actually quite a bit smaller 
       than 4x5, usually smaller than medium format.In all fairness, 
       some of the more expensive cameras and backs do exceed 16mm"
       film."
       ___________________________

       This is not true.- With a scanning back, resolution far 
       greater than 35mm film is possible - What you lose is 
       your exposure time which may run up to 200 seconds as the
       sensor moves across the "film plane."  - With a panoramic
       set up, resolution of 6000 by 65,000 pixels is possible. 

       See for example:

      http://www.sjphoto.com/index.shtml     

     which discuses high resolution high-resolution digital landscape 
     photography with some very high end custom equipment - specifically 
     the "Dicomed 4x5" and "Better Light"  "digital inserts" which are 
     designed to fit on a Sinar-X 4X5 view  camera - The Dicomed produces 
     6000 by 7500 pixels in 130mb files with more than 9 stops of 
     exposure latitude - and the Better light produces 6000 by 8000 
     pixels in 142 Mb files with more than 10 stops of latitude - 

      Also see www.betterlight.com which has some good explanations as to 
       how high end digital camera backs for 4X5 cameras work.  This 
       web site also discusses the high resolution panoramic digital 
       camera mentioned above. 

       Also see for a home made version of a high resolution scanner 
       camera: http://www.sentex.net/~mwandel/tech/scanner.html


 

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