Infinity focus
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In optics and photography, infinity focus is the state where a lens or other optical system forms an image of an object an infinite distance away. This corresponds to the point of focus for parallel r
The infinity focus marked as ∞ on a Minolta lens
Hyperfocal distance
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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
Infinity focus
…are nominally set to infinity, have thermal controls. Deviations from its operating temperature are actively compensated to prevent shifts of focus. Hyperfocal distance…
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.