Archived posting to the Leica Users Group, 2002/03/18
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]i think the gist of it is that let's say you develop zone VIII as per ansel adams to about 1.25 d above film base+fog. that might put zone X at 1.55 over film base+fog. if film base+fog is as high as 0.30D, then your maximum "meaningful" density would be 1.85D. therefore a scanner capable of scanning in that (limited) range would theoretically get the range of tones your print would get. - -rei > From: "Tim Atherton" <tim@KairosPhoto.com> > > Thanks Austin, > > I meant more along the terms of how did you explain it rather than justify > it...! > > Could you explain what you mean by dRange and what this means for scanning. > > thanks > > tim > > > -----Original Message----- > > [mailto:owner-leica-users@mejac.palo-alto.ca.us]On Behalf Of Austin > > Franklin > > Sent: March 18, 2002 9:23 AM > > Subject: RE: [Leica] Print film scanning D-Max? > > > > > Was it on the LUG that someone posted that negative films only need a > > > scanner d-max of 2.8 or some such? > > > > Hi Tim, > > > > Yes, it twas I who posted that some such ;-) > > > > > Also, if so, what was the rationale? > > > > Do you mean what do I base my claim on? 20+ years of measuring > > film with a > > densitometer...as well as over 10 years of scanning film... > > > > Technically, it's not dMax that matters, but dRange...and often people say > > dMax when they really mean dRange...or they simply reference dMax > > to a dMin > > of 0, and therefore dMax and dRange are the same. > > > > Austin - -- Rei Shinozuka shino@panix.com - -- To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html