Being a newbie, I am trying to get a feel for which forum is best for which subject. I am into both digital and film. There is quite a bit overlap between forums. For film, there is Canon FD, Classic mechanical, and modern. I gather that if a camera is inoperative with out batteries, modern film is appropriate. Nikon film cameras may be either in classic or modern. But quite a few Nikon film entries appear in the Nikon forum. It seems that Nikon forum would be better off if it was Nikon digital. I notice that there are quite a few entries in Canon FD discussing FD lenses mounted on mirrorless digital cameras - fine with me. But mounting classic lenses on such cameras seems to verboten on the classic mechanical forum. I just remembered that film cameras can all be discussed on the rangefinder forum. I am not complaining or trying to change anything. I just need a Rosetta Stone. I really like the comprehensive and friendly advice that is forthcoming.