1. Some cameras have their hyperfocal distance marked on the focus dial. 2. This makes a bigger circle of confusion and smaller hyperfocal distance . 3. The hyperfocal distance is the closest distance at which a objects at infinity acceptably sharp. 4. The hyperfocal distance is entirely dependent upon what level of sharpness is considered to be acceptable. 5. You're conveniently forgetting about half of the plane " not " beyond the hyperfocal distance . 6. Focusing on the hyperfocal distance is a special case of zone focusing in which the far limit of DOF is at infinity. 7. Thomas Sutton and George Dawson define " focal range " for what we now call " hyperfocal distance ": 8. When the subject is at the hyperfocal distance or beyond, the far DOF is infinite, and the near : far ratio is zero. 9. When the subject distance s is small in comparison with the hyperfocal distance , the second term in the denominator can be neglected, leading to 10. 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.
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