I am visiting Stromboli in the near future and I would be delighted to get some classical volcano pictures. The most likely conditions are jets of stones with the typical streaks, or diffuse glow on the mountain. Examples are here. I plan in night shooting from the sea, very close to the coast, and maybe close to the crater, up on the mountain, depending on conditions and permits. I will be shooting with a FM2n w/ 50mm/f1.4 and a small tripod. No way to carry more with me. So, no digital and no possibility to cross check my exposure right there. Assuming I will be shooting 100ASA film or 50ASA slides, I would warmly welcome advice on exposure/shutter time.