Digging through an old box of goodies I received from a friend, I just found an old sealed bulk 35mm film container labeled "Kodak Technical Pan Film 2415" and there is a serial number that is partially written over. Someone has written Unex. Test Roll "Short" in marker on the container. I've rolled a couple short rolls of this to test it, but I was wondering if anyone could tell me what speed tech pan is? Assuming it is tech pan I guess! While loading it I noticed that it is a pretty dark looking film, very dark gray. Much different than the Tmax that I had in the loader before this. Thanks.