I shot this sequence last night, my roomie decided to see what would happen if he did the 'ol grenade toss into the field next door instead of launching it out of the mortar tube.
I love the motordrive function on the camera, I jacked the ISO to 6400 and opened the lens wide (f3.4) and just held down the trigger.... It was considerably darker in reality.
Fun shit, made a satisfying BOOM!