I am working on a project to stockpile and freeze photographic film and paper for later use. This is not for academic or commercial purposes, but just for personal use. I've been experimenting and am stumped as t the following: I place a package of film in a ziplock bag in an environment of about 67F and 35% RH. I included a humidity indicator strip as well as a humidity gauge in the bag as well. The problem is that, when I pace this in the freezer, the humidity drops to 10% as the temperature drops to 0F. THe next day, when I remove the closed bag from the freezer, the temp rises to room temp (67F) and the RH climbs right back up into the 30s within hours. I am an electrical engineer, but to me this is backwards. If the moisture content stays relatively constant in the bag, it seems the like the RH should go UP when I freeze it instead of down. Can someone please tell me what I'm doing wrong. For this application, lower humidity is better than higher humidity, of course, but I still want to understand what's going on. Any guidance would be appreciated. I apologize if this is the wrong place to be posting such a question, but I'm running out of options for finding an answer.