i inadvertently proved it was multiple shots when i tried a handheld HDR shots in low lighting (restaurant). My subject (son) was moving quite a bit too, and the end result was very strange... floating limbs and such.
You can do tonemapping from a single image, but the end result can easily be replicated with some levels and contrast adjustment in photoshop.
I think it was already proven somewhere else that the sound effect of the shutter has no correlation to the actual shutter, which IMO is very unfortunate.
The good thing about science is that it's true whether or not you believe in it. -Neil deGrasse Tyson
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