Whirl of Rose, photo by Harold Davis.

Briefly noted: This is one of the roses I brought to a recent Creative Close-Ups workshop. I photographed the blossom straight down using natural light (it was overcast, so the light was relatively dim and diffuse).

Taken with a 50mm Sigma macro lens, three exposures from 0.5 seconds to 3 seconds combined in Photoshop, each exposure at f/32 and ISO 100, tripod mounted.