A Simple Explanation of the Optics Behind Pinholes, Camera Apertures, and Your Eye

If you’ve never thought to find out why aperture works the way it does, you should definitely check out this simple explanation of optics, aperture and pinholes by MinutePhysics.

In a couple of minutes, the video gives you a great overview of why a pinhole camera works the way it does, how you eye works to focus light, and why stopping down an aperture brings your whole scene into focus.

Plus, as a bonus, you get a great tip on how to see something clearly in a pinch if you forgot your glasses at home.