I have shot one roll of this film, and the film rebates turned out quite dark. I had a lot of trouble spooling it, because of high friction between the film and the spool. (I don't know whether the film or the spool is to blame.) How can I tell if the film base actually is dark or if the film was fogged? It took me between five and ten minutes to get the film spooled properly and into the tank, and I discovered that after a few minutes in the film-loading closet I could see a very faint light leaking in where the ceiling meets the walls.