Photos of clouds weather and lightning bolts. I use several techniques to capture lightning depending on the storm. If there is enough activity, frequent lightning, I will use shutter priority on a very fast setting in medium or the first large size jog setting and just fill the burst using my feel for the storm. If the lightning is sporadic I will use long exposure usually 10 to 15 seconds on apreture priority. Again depending on the activity, I will use RAW if the lightning isn't too active or JPG if there is a good amount of lightning.