Archived posting to the Leica Users Group, 1997/11/15
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]> >As far as I'm concerned 3200 even in a freezer and frozen solid will be > >affected. Is this technically true? I haven't got a clue. I just know it > >can be in the freezer for 6 months and when you go to use it and compare > >negs after being in the freezer to negs that were exposed when you first > >got the film and there is a distinct overall "fog" look. > > ANY film will be fogged by cosmic rays over a period of time. In astronomy they sometimes use special cameras in which the emulsion is chilled with liquid nitrogen. I was under the impression that film became more sensitive (presumably to both visible light and cosmic rays) at very low temperatures. Do any of the amateur astronomers on the LUG know anything about this?