There are basically three types of colour densities in colour photography:
-) the analytical one, by which each dye-forming layer is made seperately and its density over the spectrum is measured,
-) the integral one, by which the stack of these layers is measured the same way
-) the neutral density by which a positive film is spectrally exposed in a way, that when viewed, with the light the positive is designed for, a neutral (grey) impression is made. It is typically shown as well as three analytical grey densities and as one integral grey density.
All exposures can be made to form different peak levels of density.
Last edited by AgX; 01-17-2013 at 12:51 PM. Click to view previous post history.