Must have been hard to catch that one! Looks like focus is on the wings instead of maybe the head or body. Did you use flash? Might have helped to freeze the dragonfly...
Abel: I was too close for regular flash. I suppose a ring flash would have been ideal, but I don't have one. The depth of field was extremely shallow because of the f 3.5 aperture and the use of a close-up diopter. Even a slight change in angle of the camera totally changes the location of the focus area and this dragon fly was rather small.
It was on the railing of a deck and the green in the background is the lawn. I cropped some off the top.
Looking at your picture again, I can see how small that dragonfly really was. Knowing that, you did a nice job capturing the dragonfly before it flew away.