FITBMX, I usually shoot these dragonflies in the f10-18 range. If I have a full side view, I may go down to an f8 because the whole body is in the DOF. If I go that wide, the wings may not all get in focus if they are open (which they usually are on a dragonfly but many damsel's will close their wings when perched). It just depends on the effect you might want. I try to shoot at ISO 100 and often they are underexposed, but if not too much, post processing takes care of that. Don't be afraid to bump up the ISO if need be. Jimmerjamma, I totally agree that God's design is awesome and fun to capture in a photo.