Hi, has anyone here played around with trying to figure out a system to calculate a "Pyro Staining Index"?

My idea is to somehow compare the Contrast Index measured by measuring the blue channel densities and then comparing to say the green channel densities when developed to a particular CI. This could be as simple as dividing the results for the blue CI by the result for the green CI. So for a given hypothetical developer/film combo, one film would have an index of 1.2 vs. another that would be 1.35. This would show that the second film here has greater staining than the first one. This could be developed into a system to better quantify different developers or comparing films in any particular developer.

Any one thought about this before?

Kirk