Digital BW, The Print

Hi Steve

I'm glad to hear it!  Too much measurement never does anyone any good - I pretended to be an engineer in a previous life so this is one of the few things I can comment on from experience.

David Whistance

  -----Original Message-----
  From: DigitalBlackandWhiteThePrint@yahoogroups.com [mailto:DigitalBlackandWhiteThePrint@yahoogroups.com]On Behalf Of Steve Gledhill
  Sent: 07 October 2008 22:59
  To: DigitalBlackandWhiteThePrint@yahoogroups.com
  Subject: RE: Subject Brightness Range - branch from [Digital BW] Re: Getting reasonable scan file sizes w/ MF & LF ...


  Hi David,

  I don’t measure the actual negative densities, but I do know that I’ve yet to create a neg with an area of density that the V700 can’t scan. But that arises from the way I process my film. I don’t overcook my film to produce impenetrable densities.

  Steve Gledhill

  www.virtuallygrey.co.uk <http://www.virtuallygrey.co.uk/> 

  From: DigitalBlackandWhiteThePrint@yahoogroups.com [mailto:DigitalBlackandWhiteThePrint@yahoogroups.com] On Behalf Of David Whistance
  Sent: 07 October 2008 22:21
  To: DigitalBlackandWhiteThePrint@yahoogroups.com
  Subject: RE: Subject Brightness Range - branch from [Digital BW] Re: Getting reasonable scan file sizes w/ MF & LF ...

  I'm not sure where this comes from. 16 bits of data gives 2 to the power of
  16 shades of grey, ie 65,536 of them. Should be plenty to divide by 17
  stops, particularly as the relationship between a stop and a set of shades
  of grey is arbitrary - you can map them how you like with either the scanner
  software or Photoshop. What does surprise me is that Steve gets this from
  an Epson V700, however I've seen some of his images and he does undoubtedly
  capture a very large SBR with detail at both ends so I'm sure he's right.

  David Whistance 

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