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

T-stop

Also called: T stop

ELI5

A lens aperture scale adjusted for the amount of light actually transmitted through the lens.

Used in conversation

“Let’s test the T-stop before we lock the camera and lighting setup.”

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

  • F-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.