The density of the characteristic curve
is the density obtained after exposure to light of a specified spectrum over a continuously varied magnitude, measured at the processed film by lighting with light again of a specified spectrum.
This relation/graphic is intended in many cases vor evaluation/comparison of films only. In case of materials serving as as final, viewed material that latter light should be of a kind typical for viewing this material. However, in data sheets you won't find any details of this light.
Last edited by AgX; 01-17-2013 at 12:46 PM. Click to view previous post history.