Thanks, I'll read that. I don't consider a filter or add on to a lens a "soft focus lens". Like we know, in Large Format soft focus came about very early, even in the wetplate era, then in the 1900s Pictorialism era, then the Hollywood glamour era. Then kind of died except some portrait studio work. The soft of the 1970s was often done with a filter, on 35mm. And you can tell by looking at the shots. There are levels of SF quality....