When it is done with a telephoto lens from a distance. Oftentimes that is the best combination to use for getting closeups of small critters....such as damsel flys in the backyard.
Tip: Damsels and dragons tend to use a favorite perch to hunt from. So when you see one watch it closely it will land, then stay with it after awhile it will take off but keep watching that perch. Nine times out of ten it will return. This also goes for certain birds such as Phoebes, flycatchers, and certain warblers.