Slaty Skimmer – 3 Image Focus Stack

I was looking for dragonflies and found this Slaty Skimmer at a local park for a photo subject. I wanted a colorful, softer & smoother background so I was using a 400mm f/4 Canon DO lens, with an extension tube on a Canon 1D mkIV. I shot 3 images at different focus points @ f/11. This gives me enough sharpness on the dragonfly (wingtips & tail) but still gives me a very smooth background. This makes my dragonfly stand out more from the soft background.