I photographed these great horned owl chicks in a nest many years ago in California. I used on-camera flash because I was afraid if the light came from the side -- which I usually prefer -- the shadows might be problematic. In other words, one chick might cast a black shadow on another. I thought it was interesting that the flash revealed a blue color in the pupils of the birds. Many animals are born with blue eyes and then they lose that color later. I shot this with my medium format Mamiya RZ 67 film camera and a powerful Metz 45 flash. I used a 350mm lens, and since I had so much light from the flash, I remember my aperture being f/32. That's why all the various planes are sharp. This camera synced with a flash at any shutter speed, and I typically used 1/250. I captured this image on Fujichrome Provia 100 transparency film, and then the image was scanned on an Imacon scanner for superior resolution.