Study using Helicon Focus. This is a composite of 30 stacked image where the focus was adjusted near to far using Helicon Remote and then combined using Helicon Focus. The images were aquired using a Nikon D3x and 5o mm f/1.4G (ISO 100, f/1.4, 1.3 sec) and ambiant light. Aprox. 5″ between nearest and farthest focus point, and the camera was about 24″ from the nearest focus point. The Helicon settings were mode B, radius 8, smoothing 4. Other settings increased the halo.