> From: Andrew Skretvedt > > In evaluating a film scanner, one should consider its dynamic range. How > deep can a scanner reach in and pull out shadow details from a very > contrasty slide, for example. What about one that might have been > underexposed a bit as you tried to keep from blowing out highlights? > > I've seen some dynamic ranges posted for certain scanners here and > elsewhere, many appear to be measured figures. But for the Minolta > DiMAGE Scan Dual III and IV, the posted figure is 4.8 (calculated). > > That figure appears to be the theoretical dynamic range for the bit > depth of the capture. Of course this is not going to be its true range. > Does anyone know the actual range of these scanners? How is dynamic > range measured?
Dynamic range is limited by noise in the sensor. You rarely see specs on this, even though a meaningful spec standard could certainly be devised. -- Ciao, Paul D. DeRocco Paul mailto:[EMAIL PROTECTED] ---------------------------------------------------------------------------------------- Unsubscribe by mail to [EMAIL PROTECTED], with 'unsubscribe filmscanners' or 'unsubscribe filmscanners_digest' (as appropriate) in the message title or body
