Here are two different Blue Dasher focus stacks. The featured image is made with 3 images. First image is focused on the head, then fore wings & then front of the hind wings. I was using a 300mm f/4 lens on a Canon 7D with a 1.4x teleconverter. I loaded each image into a layered Photoshop file and let a Photoshop align & blend the sharpest areas. The second image I wanted to mainly focus on the face but the plant was in the same focus plane as the face. I thought that might reinforce the roundness of the dragonfly head because of the roundness of the plant. I was shooting @ f/ 5.6 for a shallow depth of field. I then focused on the fore wing because I wanted a sharp edge on the fore wing and let the rest go softer into the darker background.