Home Wikituition Browse all terms Categories
Random term

Results for “Aperture”

6 terms

A–Z
All A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 0–9
Filtering by: Aperture Starts with D Clear all
Cameras, Formats & Systems

Depth of Field Preview

A control that stops the lens down to the working aperture so the actual depth of field can be seen before exposure.

 Focus & Depth of Field

Depth of Field Scale

Markings on a lens barrel showing the near and far limits of sharpness for each aperture at the set focus distance.

m / ft Optics, Lenses & Filters

Diffraction

The spreading of light waves as they pass the edge of an aperture, which softens the image at small f-numbers.

d = 2.44 × λ × N µm Optics, Lenses & Filters

Diffraction Limit

The aperture beyond which diffraction, rather than lens design or sensor resolution, becomes the factor limiting sharpness.

N_limit ≈ pixel pitch / 1.22λ f-stops Focus & Depth of Field

Deep Depth of Field

A wide zone of sharpness in which foreground, subject and background all hold detail.

m Focus & Depth of Field

Depth of Field

The range of distances in front of and behind the plane of focus that appears acceptably sharp in the final image.

DoF ≈ 2u²Nc / f² m