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Depth of Field

Depth of field and hyperfocal distance from focal length, aperture, focus distance and sensor, with a range chart

Depth of field
0.369 m
2.83 m – 3.2 m
Near limit
2.83 m
Far limit
3.2 m
Hyperfocal
48.2 m
Circle of confusion
0.0288 mm
35 mm equivalent
50 mm
2.83 m – 3.2 m
Sharp range
2.83 m3 m3.2 m

Focus at the hyperfocal distance and everything from half of it to infinity is acceptably sharp — the classic landscape trick.

Standard formulas: H = f² / (N·c) + f, near = s(H−f) / (H+s−2f), far = s(H−f) / (H−s). The circle of confusion is the sensor diagonal over 1500, which matches the usual DOF tables; pixel peeping at 100% will look softer.