</span><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE (tschmid @ Apr 24 2003, 12:28 AM)</td></tr><tr><td id='QUOTE'>Ader,

you will not be able to improve color fidelity in an analog process. It is determined by the materials you use and cannot be improved by alternate filter settings. But you may be able to choose different papers. Unfortunately, current color papers do not differ much in their color fidelity. Paradoxically, the interesting fields in the color patches are the gray (neutral) ones. They will give you a reference point for the correct filter settings.</td></tr></table><span class='postcolor'>
I think there must be some difference between "color balance" - "best fit filtration selection" - effected by producing an image on paper that agrees to the densities of cyan, yellow, magenta, and overall density - as the gray card.

What other characteritics do you consider to be "uncontrollable"?
Does this lack of control consder techniques such as "pre-flashing" to control contrast?