Last night we took a drive out to Korimachi in Fukushima to see a firefly festival. The festival itself was very tiny, but the there was hundreds of fireflies. It was very hard to take pictures or videos with my camera in total darkness, but I managed this decent one here.
I had to use a very fast film speed combined with keeping the shutter open for 15 seconds. What is cool is that a firefly flew right in front of my camera during the picture, producing that green streak.