Thank you for the advice Graeme. Those are some truly stunning photographs. I love the Australian landscape, it is so wonderfully photogenic. I visited Australia in the late eighties and my only regret is I only took a compact snapshot camera. The thinking being to save on luggage weight as at the time the only other camera I had was my Zorki, not a lightweight! What a fool I was! This I realised once I was walking around Uluru and the Olgas!
As for the lightning I think I'll hedge my bets and experiment with all the various methods suggested here. Thanks again for your tip!
And also hello Sparx and thanks for the welcome!