Archived posting to the Leica Users Group, 2002/03/26
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Austin & John: What do scanner manufacturers mean when they say that their devices have a high DMAX? Are they claiming a high dynamic range, yet use the term DMAX? Jim http://www.hemenway.com > Hi Don and Pablo, > > Johnny explained it perfectly. dMax and dMin are measurements of density, > not dynamic range. They are entirely different. > > It's the same reason that chromes, though they have a longer density range > (since they have no colored film base, their range extends from clear film > to darkest black) than negatives (whose range extends from above the film > base to darkest black)...yet negative film has a larger dynamic range > (ability to discern more tones). > > Line art drawings have a very large density range...but have virtually no > dynamic range, since there are no tones between the white and the black... > > Austin > > -- > To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html - -- To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html