Let s be the distance at which the camera is focused (the "subject distance"). When s is large in comparison with the lens focal length, the distance DN from the camera to the near limit of DOF and the distance DF from the camera to the far limit of DOF are (approximately):
DN [...]
and
\(D_F\approx\frac{Hs}{H-s}\) for s<H
The depth of field DF - DN is
\(\large DOF\approx\frac{2Hs^2}{H^2-s^2}\)
Let s be the distance at which the camera is focused (the "subject distance"). When s is large in comparison with the lens focal length, the distance DN from the camera to the near limit of DOF and the distance DF from the camera to the far limit of DOF are (approximately):
DN [...]
and
\(D_F\approx\frac{Hs}{H-s}\) for s<H
The depth of field DF - DN is
\(\large DOF\approx\frac{2Hs^2}{H^2-s^2}\)
Let s be the distance at which the camera is focused (the "subject distance"). When s is large in comparison with the lens focal length, the distance DN from the camera to the near limit of DOF and the distance DF from the camera to the far limit of DOF are (approximately):
DN [...]
and
\(D_F\approx\frac{Hs}{H-s}\) for s<H
The depth of field DF - DN is
\(\large DOF\approx\frac{2Hs^2}{H^2-s^2}\)
| status | not learned | measured difficulty | 37% [default] | last interval [days] | |||
|---|---|---|---|---|---|---|---|
| repetition number in this series | 0 | memorised on | scheduled repetition | ||||
| scheduled repetition interval | last repetition or drill |