I have a box of ilfolith IH4 film that I intended to start working my way through to try it out and get some cheap photos $2 for the unopened box!) I tried at photo.net to find any sort of help so I could properly expose it in camera, only to be told it doesn't have any sort of rating. The rest of the replies were even less helpful than that, mainly to the tune of "buy some real film." What would be a base exposure rating? Is a lith developer necessary, or can I just use the standard D76? I've processed color film in it by using full-strength developer. I wanted to load up a film holder or two and just go grab a couple pictures from a local state park. About what ISO should I use for the film for estimating sunny 16? Thanks in advance.