This is a 10 multiple exposure image. I used autofocus on the yellow center and moved my DSLR camera minimally between exposures.
Rather than hand holding the digital camera and moving fluidly from exposure to exposure, I placed the camera on a tripod. I loosened the tripod collar on the 200mm Nikkor micro lens and twisted the camera/lens in very small increments (as long as the autofocus point remained inside the yellow).
Of equal importance - actually more important - is the background. Backgrounds can make or break an image. The flowers are in the shade and the background is in bright sun. When out of focus, bright grasses become bright, complementary backgrounds, as in this case. I also shot at a more open aperture in order to focus attention on the bright yellow center.
In post processing of this photo of multiple exposures, I increased the saturation and contrast in the yellow by using Nik's Photoshop plugin, Viveza 2.
Notes from the editor: Tony Sweet teaches at BetterPhoto's digital photography school, including these online photo tutorials: Fine Art Flower Photography and Image Design: Revealing Your Personal Vision