This is a series of Blue Dasher Dragonfly images taken with a 400mm DO lens, but I also used an on camera flash with a Better Beamer Flash extender to help fill in the shadow details on the dragonflies. Also for some I set the flash so I was slightly overexposing on the subject dragonfly. This way when I compensated for the correct exposure on the dragonfly, the background would be darker and a little more dramatic.

Mating Blue Dashers