Quote Originally Posted by Henning Serger View Post
Hello Nathan,

the Spur developers for microfilms and Technical Pan films are special and have nothing to do with other document film developers.
It is a completely different and unique technology (called "inkorporierte Verschleierung").
"Incorporated veiling"? Maybe "Verschleierung" has a different connotation in German---I'm not sure I would want my negatives to look "veiled". :-)

While acknowledging that we're talking about someone else's proprietary "secret sauce" here, I wonder if it's possible to discern anything about what this description really means. In some sense all development is the same---activated grains get reduced to metallic silver---so I'm a bit sceptical of a phrase like "completely different and unique technology" without knowing what aspect of the process the difference relates to. Is this stuff known, or is it all Spur's secret?