Can I use the Phenidone in the part A of a divided developer as well? Part of my logic here is that the more I can restrain the highlights by limiting the activator, the higher the developer concentration I can use. More time maybe too. I'm theorizing that I can find some optimum concentration of part A that gets enough developer into the emulsion to really develop the shadows, but runs out of gas before the highlights go over the top. It just seems like a very tuneable setup. All theory; have to try it out to see how it goes in practice. Copy film and microfilm are not for everything , but they are really nice in certain applications. We might be on to some kind of ultimate copy film developer. By the way, it was Patric Dahlen that got me onto the Windisch formula in the first place. Before that I had real doubts this film could be good for anything.(posted 8162 days ago)Gene