Everything was a bit rushed, i just put it on shutter priority at 1sec and set the intervalometer at 1 sec. Next time i think i'll try 3 sec maybe more, i did seem to miss a few of the strikes. I have a wireless remote with intervalometer. Still it's my best attempt yet. The first time i was using a 10sec exposure but it was taking 10sec to write to the card so i kept missing the lightning strikes. Turned out to be caused by all the noise reduction setting in the camera, turned them off and now have a fast write speed.