yes. experience:
i went to the local cemetery one night a couple years ago to take pics with digi cam just for sh*t's and giggles because people are always like "you can see orbs blah blah blah" and my mom had been on a "ghost tour" in st. augustine and said she saw some weird stuff.
i went there with that attitude that i wouldn't find anything. so i took the tripod and took pictures WITHOUT the flash so it wouldn't illuminate any dust (which i think most of the orb pictures really are, just dust particles) just to try and eliminate as many other possibilities as possible.
anyways, i set up at the SE corner and set the camera to take multiple pictures, with a shutter time of 3 sec. each. it took about 5 pictures in the time i had the shutter button pressed down. i didn't focus on any particular grave but rather took wide-angle shots to get some overview shots. after the camera was done doing its thing, i switched it to the review setting to see what i had gotten.
this is where things got hairy and scary. the first two shots were just cool looking (from the ambient moonlight) the THIRD shot, however, showed a very obvious and good-sized cloudy white blur travelling going across the frame about 6 or so feet in front of the camera (estimated). i immediately looked up, but didn't see anything. i was admittedly freaked the h*ll out so i walked quickly back to my car and looked through the other pictures, which had nothing unusual. there was just that one.
i know it sounds stereotypical and movie-like but as i was reviewing that one picture with the blur again as i walked back to the car it got REALLY cold, i mean seriously cold I could see my breath, but this was a spring night...low was supposed to be in the mid 60's. suddenly my camera shut off and my flashlight died at exactly the same time. both had fresh batteries in them but just died. so i thought "f*ck this" and ran the rest of the way to my car.
got there, started it, hauled *** home. got home, put new batteries in the camera, memory card was blank. nothin. put new batteries in the flashlight, and it worked fine. ive never been the same since.
edit: i think the official ghost term for it is "ectoplasm":
This kind of energy pattern is commonly called ectoplasm and may be composed of one or more spirits/ghosts/souls in a disassociated pattern of spirit energy.
it was similar to this: but more stringy looking and less illuminated (because of no flash)
http://photos1.ghostweb.com/jeng1.html
i've thought about alot since and thought that perhaps my breath could have caused the cloud, but it wasn't that cold! it was only cold when i was walking back to my car. plus im pretty sure i was holding my breath when i took the picture, because i usually do that when i photograph to help avoid movement when i press the shutter button.
and i can't find anything to explain the electronics failure other than the commonly reported electromagnetic field fluctuations that are sometimes reported.
http://southjerseyghostresearch.org/faq.htm#emf i guess some people report batteries being drained.
as far as the temperature drop, i haven't a clue.
http://southjerseyghostresearch.org/faq.htm#temp