This photo was captured using an Olympus E-M10 Mark II with a 16 mm extension tube and M.Zuiko 40-150mm f4.0-5.6 lens.  The aperture was f/5.6, shutter speed 0.6s, ISO 800. I used the focus bracketing feature on my camera with a tripod and stacked 8 photos together for a larger depth of field to keep the entire battery in focus.