Originally Posted by Ole
I don't want to interrupt Sandy and your dialogue. Please forgive me for doing so. My question that arose is the variable contrast filters that came with my Durst 138 S enlargers. These seem to work very well in progressive steps of contrast. They seem to be made from Kodak filters that have been enclosed in a glass envelope. I place them immediately ahead of the heat absorbent glass ahead of the light bulb and before the condensers.
There happens to be a set of these filters up for sale on Ebay now.
Sorry for the interrruption. Good luck.