A high-key macro study of sunflower petals where strong backlighting transforms organic matter into glowing, amber-hued architectural layers. The image focuses on the rhythmic repetition of the petals and the intricate vein patterns revealed by the light.

Technically, this is a very disciplined shot. The use of a 150mm focal length at f/11 is ideal for macro, as it compresses the layers while keeping the 'veins' of multiple petals in sharp focus. The ISO 100 on the D800 ensures a clean, noise-free file that would hold up well to large printing. The shutter speed of 1/125 is just fast enough to avoid motion blur, though a tripod was likely essential here.
The pure white background on the left is quite dominant; consider a tighter crop or shifting the frame to let the petal tips breathe slightly more against the void.
A few of the brightest edges are nearing clipping; slightly reducing exposure by 1/3 stop could preserve even more micro-detail in the hottest highlights.