A student of mine said that she had purchased the film developer "DK-60A" and wanted information regarding its use. I am not familiar with this developer and when I looked it up in what books I have available on the subject, Ancel Adams book, "The Negative" makes only the vaguest reference and no other books seem to mention it at all. If anyone knows the properties of this developer and can share, I would appreciate it very much.(posted 8988 days ago)Thanks,Margie