MartinF
New member
Many videos talking about birds in flight photography talk about the importance of focusing on the eyes, because if you focus on a wing the head might be out of focus. They talk about an extremely shallow depth of field, apparently being a foot or less. Online depth of field calculators show a much greater depth of field. For example, Depth of Field Calc, when set for my Nikon D7100 and a distance of 300ft, f/stop 4.5, focal length of 600mm gives a depth of field of 13.43 ft. Can someone help me to understand.