Displayed here for your amusement are two very different technologies for creating photographs.
One requires chemistry and the other electricity.
One can handle being dunked in a lake and the other, well, not so much. I fact, had I not tested that idea with my 20D, we wouldn't have this picture.
Yes, those are rust spots...
Shot with 40D & 50mm at f2, 1/30th, iso 400