Hi Bobo, nice shot. Lightning is always better with a good foreground and some scenery. Our season has just finished in Darwin and I have managed to get some shots which you can see on my web site below. I shot all of these shots at F:22 and focused on infinity with a 20 mm lens, using a tripod with 100 ISO, and 30 second SS. Many will say why F:22 but simply, it works for me. There is one shot which landed 100 metres from the camera and is in perfect focus, as is another strike in the back ground 5 km's away and another 10km's away. If your keen to get more shots you can buy a lightning reactor which will take the shot when there is a strike, I will buy one myself for next season and save my camera taking a lot of shots of nothing. Keep at it, its great hobby.