Save your money Dave. The books by the Ed are the worst I have seen. IMHO. I have a problem with any camera repair information that recommends silicone oil for leaf shutters or home-made bondo and a hammer for dented top plates on SLR's. For really good stuff, it is very very hard to beat the National Camera manuals. Especially the ones they used in the camera reapir tech course. I also highly recommend any books by Thomas Tomosy. They are expensive, but they are very well written. I have only seen 5 Camera Craftsman magazines, but if they do any leaf shutters as well as they do SLR's, they would also be top notch information. I have an original Gauthier shop manual from 1955 if anybody need info on diagnosing Prontor or Vario shutters.