Peter Miller has done a number of projects that involve directly exposing Polaroid instant film. Static Fields:
These Polaroids were illuminated by their own electrocution. They are cameraless images, which are immediate records of the bolts of electricity that passed through them.
My brother helped me catch these, we let them loose on the Polaroids in the basement. Polaroids are positives. This is a record of lightning bug dance-steps. Look closely and you can see the shadows of their legs.
Polaroids are removed from their case in a darkroom, laid flat and exposed as a single, light sensitive array. After they are exposed, they are reinserted into the pack and -with the lens now covered- can be processed by simply pressing the camera's shutter and processing the film by ejecting it from the camera.