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Mathematics of pinhole cameras | Virtual Cameras | Computer animation | Khan Academy

Derives the similar-triangles relationship between an object, a pinhole and the image it projects, showing how image size depends on object distance and camera depth. Foundational geometry for the optics that follow in the unit.

Khan Academy Labs · 3 min · Intermediate · CIN · Cinematography · 2016

What you take away

Use similar triangles to calculate the image size formed by a pinhole camera.

Watch it

Filed under

Oscar winners for cinematography

Books on cinematography

Kit for this lesson

Sony FE 50mm F1.2 GM — A stop and a half past normal
Sony FE 24-70mm F2.8 GM II — The standard zoom most FX bodies wear
Sony FE 16-35mm F2.8 GM II — The wide end of the same set
Canon RF 50mm F1.2 L USM — The portrait-adjacent normal
Canon EOS R6 Mark II — The affordable full-frame RF hybrid
Nikon Z6 III — Partially stacked sensor, N-RAW internal

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