Digital BW, The Print

Steve 

While on one face your calculations are correct on the end where we deal with the scanner your calculations are dead wrong.

You need to scan at the optical resolution of your scanner example if the scanner's optical resolution is 1200 then scan at that and work out what max size you can print from there.  No point to interpolation up or down to hit magic number arising from output size. The files used from this interpolation are often not the best scans - and in a real sense you have shot yourself in the foot even before you begin, 

Yes this may give very large files but data is data - too much you can always down sample safely in PS ; too little is when you have to weigh the pros and cons to get the best way to interpolate. 


  -----Original Message-----
  From: Steve Kale [mailto:stevekale@...]
  Sent: Friday, December 03, 2004 1:19 AM
  To: DigitalBlackandWhiteThePrint@yahoogroups.com
  Subject: Re: [Digital BW] Computing power


  8in x 10 in.  Let's say we want 360dpi to be sent to the printer then you
  need 2880x3600dpi.  You are scanning 4x5in negs.  So you need only scan at
  2880/4 dpi or 720dpi.

  BUT who knows whether you might like one of those images printed larger -
  even if you have to outsource it.  Rule:  scan at the best optical
  resolution of your scanner and tuck the file away.  If computing constraints
  are making work too cumbersome then copy this file and down-res it to 720dpi
  for your 8x10s.



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