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