Poppy Duet, photo by Harold Davis. View this image larger.
I cut these poppies from my garden and photographed them on a lightbox. I used my 85mm PC macro lens and five exposures at f/48 between one second and ten seconds.
Starting with the lightest exposure (ten seconds), I dragged the other exposures on top in Photoshop using hand-HDR layer masking to create the transparent effect.