itf
itchy trigger finger
Firstly, I'm not sure if this is in the right forum but film/developing/ darkroom seemed dedicated to, well film in terms of developing and darkroom. Sorry if I got it wrong anyway.
So anyway, everyone seems to agree that its best to store film by freezing it. Until a year ago I'd never frozen any film and never had a problem. However I was generally using FP4 so I thought maybe I shouldn't be so relaxed about some faster film I was geting. So when I got a few bulk rolls of Jessops 400sx (which is something European rebranded) I thought I'd better freeze it, so I threw the bulk rolls in the freezer.
Well...at first I thought I was continually getting sticking air bubbles during processing (which I never had before, but thought maybe the different emulsion...) and so started making all sorts of noise thudding the tank around after each set of inversions. No diference; still they kept appearing and usually on only the best photos! After thinking about it I decided that maybe it was just the film I got (which was relatively cheap), and I haven't tested with a more reliable film.
The other thing I thought was this: cold air holds less moisture than warm air, so if the air in the factory was warmer than my freezer then it is quite possible it also contained more water vapour than the cold air in my freezer could support, and some of that air went in the bag with my film. When that air was cooled down in my frezer it could no longer hold the water as water vapour and so it formed condensation in the bag and on the film before eventually freezing on the film.
Maybe that did it? What do others think?
So anyway, everyone seems to agree that its best to store film by freezing it. Until a year ago I'd never frozen any film and never had a problem. However I was generally using FP4 so I thought maybe I shouldn't be so relaxed about some faster film I was geting. So when I got a few bulk rolls of Jessops 400sx (which is something European rebranded) I thought I'd better freeze it, so I threw the bulk rolls in the freezer.
Well...at first I thought I was continually getting sticking air bubbles during processing (which I never had before, but thought maybe the different emulsion...) and so started making all sorts of noise thudding the tank around after each set of inversions. No diference; still they kept appearing and usually on only the best photos! After thinking about it I decided that maybe it was just the film I got (which was relatively cheap), and I haven't tested with a more reliable film.
The other thing I thought was this: cold air holds less moisture than warm air, so if the air in the factory was warmer than my freezer then it is quite possible it also contained more water vapour than the cold air in my freezer could support, and some of that air went in the bag with my film. When that air was cooled down in my frezer it could no longer hold the water as water vapour and so it formed condensation in the bag and on the film before eventually freezing on the film.
Maybe that did it? What do others think?