I take quite a few long exposure pinhole photographs, sometimes leaving homemade cameras outside for over 6 months. These photographs are all from negatives which were badly affected by the sun and English weather.
In some cases the emulsion layers are literally falling off the plastic film base. The Newton’s Rings present in a couple of the images are also a failure of the scanning process.
Ultimately I was attempting to capture the rhythmic cycle of the sun, and so I see these photographs as unfortunate failures as they have become almost abstract in appearance.