Revenant said:

Hmmm…interesting.  I wonder what the difference is in EMF between the hand held video cameras, the professional video cameras used to shoot J&G, and the TIR camera itself.  It seems like the camera guys get pretty close to the people trying to detect EMF with their hand held meters without much effect.

The thing is, I don't trust any electronics after seeing what your average "innocent" little gadgets can do. Video cameras might seem safe to a certain distance, then the auto focus suddenly decides to kick in or someone decides to use the zoom and the EMF meter goes off. Ghost! ….Not.

I can detect my Hi 8 handy cam from a couple of feet away. I don't know how electronically noisy a TIR or pro camera is but I trust nothing. I've seen too much. 

Waterfall time graph with newest traces at the top 2/3 of the frame where I switch the camera on. Wideband noise from just above DC to 22KHz+.

http://img6.imageshack.us/img6/3046/capt0907090927.jpg

Then I focus something. Horizontal lines are focus and zoom.

http://img6.imageshack.us/img6/2883/capt0907090933.jpg

My gauss master even registers it.

I reckon this may explain a few videos I've seen now where a camcorder is in proximity to an EMF meter. They think they are talking to ghosts, but the camcorder is the one talking back Lol.