Last weekend, I went to take some pictures of the milky way, but soon after I arrived, the clouds appeared...
I tried to spend some time trying to shoot the numerous fireflies that were lightning around... not easy... I did a 4 minutes exposure... at F10 9because I could not have any focus confirmation because it was too dark, so I closed to get the greatest DoF, and I used ISO6400
but... not easy to catch what I was seeing... especially with a 14mm UWA on FF (Bower 14mm F2.8)
When zooming on the image in Lr, we can see numerous green spots...
I dont know what I can do to improve the catch of fireflies, maybe longer focal length would help...
Anyways, that gives you an idea...
Ballet de mouches a feu (Lampyridae) en bordure de route / Fireflies (Lampyridae) ballet on country side road. by
Sylvain Cote, sur Flickr