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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.

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