Pyrocat-HD is my primary film developer and I use it with either minimal agitation or semi-stand agitation. I can see positive differences in my LF contact prints and would like a better understanding of what is going on. The approach to understanding that I favor is a Statistical DOE (Design Of Experiments). In order to accomplish this I need to make repeatable, quantifiable (and applicable) measurements. My old Perkin-Elmer microdensitometer is not up to the task. Can anyone identify a microdensitomery instrument (or alternative) which has the right spectral response coupled with the requisite spatial resolution to quantify changes in microdensity? Any recommendations?