HyperFocal

* Hyperfocal distance: The closest distance at which a lens can be focused while keeping objects at infinity acceptably sharp. When the lens is focused at this distance, all objects at distances from half of the hyperfocal distance out to infinity will be acceptably sharp.
* Depth of field (DOF): The distance between the farthest and nearest points which are in acceptable focus. This can also be identified as the zone of acceptable sharpness in front of and behind the subject to which the lens is focused on.
* DOF near limit: The distance between the camera and the first element that is considered to be acceptably sharp.
* DOF far limit: The distance between the camera and the furthest element that is considered to be acceptably sharp.
* Depth of Field (DOF) In Front: Distance between the DoF Near Limit and the focus plane.
* Depth of Field (DOF) Behind: Distance between the focus plane and the DoF Far Limit.