From one extreme to the other 🙂 Some of my longest total exposure times in astrophotography exceed 60 hours!! At the other end of the scale I also carry out high-speed photography using flash equipment that kicks out 9 microsecond long pulses of light – that’s a factor of 2.4 to ten to the power ten!! Below is an image taken today of a light bulb shot by an air rifle pellet (the flashes are sound triggered to take this shot) and this is what happens during the 9 microsecond exposure period just 5 milliseconds after firing the rifle.
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