I came across this story and thought it and the photos to be excellent!

A woman taking photos with here phone camera was surprised to see the large UFO images in them when she later downloaded them. She didn't see them in the sky at the time.

It makes me think about using a camera to capture the infra-red light that emits from the end of a remote control (try it!) that is visible in the photo but not with the naked eye. How many things exist that we can't see?

Attached Images
uf.jpg ufo2.jpg