Do you want BuboFlash to help you learning these things? Or do you want to add or correct something? Click here to log in or create user.

Tags

#photography

Question

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 **D _{N}** from the camera to the near limit of DOF and the distance

\(\large D_N\approx\frac{Hs}{H+s}\)

and

\(D_F\approx\frac{Hs}{H-s}\) for s<H

The depth of field

Answer

\(\large DOF\approx\frac{2Hs^2}{H^2-s^2}\)

Tags

#photography

Question

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 **D _{N}** from the camera to the near limit of DOF and the distance

\(\large D_N\approx\frac{Hs}{H+s}\)

and

\(D_F\approx\frac{Hs}{H-s}\) for s<H

The depth of field

Answer

?

Tags

#photography

Question

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 **D _{N}** from the camera to the near limit of DOF and the distance

\(\large D_N\approx\frac{Hs}{H+s}\)

and

\(D_F\approx\frac{Hs}{H-s}\) for s<H

The depth of field

Answer

\(\large DOF\approx\frac{2Hs^2}{H^2-s^2}\)

If you want to change selection, open original toplevel document below and click on "Move attachment"

#### Parent (intermediate) annotation

**Open it**

#### Original toplevel document

**Depth of field - Wikipedia, the free encyclopedia**

ities discussed below. Hyperfocal distance[edit] Let be the lens focal length, be the lens f -number, and be the circle of confusion for a given image format. The hyperfocal distance is given by Moderate-to-large distances[edit] <span>Let be the distance at which the camera is focused (the "subject distance"). When is large in comparison with the lens focal length, the distance from the camera to the near limit of DOF and the distance from the camera to the far limit of DOF are and The depth of field is Substituting for and rearranging, DOF can be expressed as Thus, for a given image format, depth of field is determined by three factors: the focal length of the lens, the f -number

ities discussed below. Hyperfocal distance[edit] Let be the lens focal length, be the lens f -number, and be the circle of confusion for a given image format. The hyperfocal distance is given by Moderate-to-large distances[edit] <span>Let be the distance at which the camera is focused (the "subject distance"). When is large in comparison with the lens focal length, the distance from the camera to the near limit of DOF and the distance from the camera to the far limit of DOF are and The depth of field is Substituting for and rearranging, DOF can be expressed as Thus, for a given image format, depth of field is determined by three factors: the focal length of the lens, the f -number

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 |

Do you want to join discussion? Click here to log in or create user.