Pitch Dictionary by pitch.dog
Exposure & capture settings · Specialist

F-stop

Also called: f number

ELI5

A mathematical aperture ratio often used in still and photographic lens description.

Used in conversation

“The F-stop changes how space and focus feel, so we should test it early.”

Definition

A mathematical aperture ratio commonly used in still and photographic lens description.

Here “F-stop” means: A mathematical aperture ratio commonly used in still and photographic lens description.

Pitch context

This term helps a treatment describe how the camera or light will shape the viewer's experience.

Why it matters: Explains what the image should look like and how it can be framed, captured and lit.

Connected terms

  • ApertureAperture is the lens opening; an f-stop is the numerical ratio describing that opening.
  • T-stopF-stop is calculated geometrically; T-stop measures actual light transmission through the lens.
Sources & evidence · 10

Direct term-level sources and supporting source families.