These photos depict more of the debris and detritus left behind by the 2013 flood in Calgary.I also have some colour photos posted in Detritus from the Flood. I shot these while testing a roll of Orwo NP22 film. For a roll of film that expired in 1993, it has aged fairly well. It’s box speed is 125 ISO, but I shot these at 64 ISO giving the photos just one extra stop of light. The rule of thumb for shooting expired film is that you add one additional stop for every decade that has passed since expiration. But it is just a guideline. Real life results are also influenced by how well the film has been stored over its lifespan. I shot these photos in early 2014, so if I had followed the rule then I should have shot the roll at 32 ISO, but these photos suggest I didn’t need to.