This image was shot at the Green House in April. I believe the key to the successful image was catching the sunlight directly on the flower, to be able to capture the radiance of the white near the center. The biggest problem was capturing the depth of field across the flower. Camera was in Aperture Priority mode set at f/32 to get maximum depth of field. That resulted in an exposure of 1/3 seconds at ISO100. Camera was mounted on a tripod and a macro ring light was used.