Hyperfocal distance
Videos
In optics and photography, hyperfocal distance is a distance from a lens beyond which all objects can be brought into an "acceptable" focus. As the hyperfocal distance is the focus distance giving the
Minox LX camera with hyperfocal red dot
Nikon 28mm f/2.8 lens with markings for the depth of field. The lens is set at the hyperfocal distance for f/22. The orange mark corresponding to f/22 is at the infinity mark (∞). Focus is acceptable from under 0.7 m to infinity.
Minolta 100–300 mm zoom lens. The depth of field, and thus hyperfocal distance, changes with the focal length as well as the f-stop. This lens is set to the hyperfocal distance for f/32 at a focal length of 100 mm.
Circle of confusion
Videos
In optics, a circle of confusion is an optical spot caused by a cone of light rays from a lens not coming to a perfect focus when imaging a point source. It is also known as disk of confusion, circle
Hyperfocal distance
…dependent upon what level of sharpness is considered to be acceptable. The criterion for the desired acceptable sharpness is specified through the circle of confusion (CoC) diameter limit. This criterion is the largest acceptable spot size diameter that an infinitesimal point is allowed to spread out to on the imaging…
An early calculation of CoC diameter ("indistinctness") by "T.H." in 1866.