Digital BW, The Print

Providing the lighting is even between each batch of images you can deal with lighting falloff with software such as Equalight from RMI.  You just need to have a clear image to use as the control in the software.
 
David Whistance
 

________________________________
 From: Paul <roark.paul@...>
To: DigitalBlackandWhiteThePrint@yahoogroups.com 
Sent: Friday, 20 July 2012, 18:00
Subject: [Digital BW] Re: Pacific Image Scanners
  

 
   
 
When I was doing my internegatives, I found the MTF to be a huge problem.  Even the best -- see the Apo-Rodagon D at the bottom of http://www.rodenstock-photo.com/mediabase/original/e_Rodenstock_Printing_CCD_43-62__8230.pdf -- has a fair loss.  At 1:1 your f8 diffraction limit is like f16.  So, you want to use these fairly wide open.  Then, particularly with a stepper setup, you'd be fighting light falloff.

The stepper idea is interesting, but I'd think you'd want a telephoto optic.  Looks like lots of work.

Paul
www.PaulRoark.com 

   
      

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