|Technical Level: Intermediate-Advanced|
DOF and Hyperfocal Distance
The Hyperfocal Distance (HD) is an optically calculated constant based on the combination of lens focal length and f stop. It is used to determine what the best focal distance would be to gain maximum DOF. If your camera focuses at the HD, any object beyond the HD will be in acceptably sharp focus. With the camera focus set at HD, most items in front of the HD will be in acceptably sharp focus. You should run a DOF calculation to see how far the Near Focus Limit extends in front of the focal distance. You can still focus where every you want to focus at any focal distance from the camera. If you focus at a distance less than the HD, everything behind the HD will not be in acceptably sharp focus.