Well done! I set up with continuous 2sec exposures, hoping to catch lightning behind a beautiful rainbow in an orange sky with purple mammatus, looking east over to the Dandenongs...
10 shots
... Check focus . . FLASH!
Straight back to continuous exposures... 100+ shots ...
... Check exposure sett.. FLASH!!
... Another >100 shots, rainbow faded, no more lightning, headed in.
Never felt quite so picked on by fortune, must've had the hand off the shutter for less than 5s in 10min and missed both the well-placed lightning forks. Hey ho! Very cool storms though.