Photograms (which I've described in more detail in this answer) involve placing objects in direct contact with a photosensitive surface, usually outside a camera. Film is perfect for photograms for a number of reasons:

1. It's cheap
2. It's disposable
3. It's available in large sizes
4. It's easy to use outside of a camera

Digital camera sensors fail on all four counts!

My father-in-law produces photogram-like images by capturing light refraction patterns with a lens-less film SLR body. In theory you could do this digitally too and we've discussed it a few times, but I'm always reluctant to expose my camera's sensor to the elements so routinely. Again, film just doesn't have that issue.

Photograms (which I've described in more detail in this answer) involve placing objects in direct contact with a photosensitive surface, usually outside a camera. Film is perfect for photograms for a number of reasons:

1. It's cheap
2. It's disposable
3. It's available in large sizes
4. It's easy to use outside of a camera

Digital camera sensors fail on all four counts!

My father-in-law produces photogram-like images by capturing light refraction patterns with a lens-less film SLR body. In theory you could do this digitally too and we've discussed it a few times, but I'm always reluctant to expose my camera's sensor to the elements so routinely. Again, film just doesn't have that issue.