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Camera Obscura - how we really see things

By Jeff Buster
Created 05/07/2013 - 23:01

 

How does a hole in the wall act as a lens?   

How does the diameter of the hole in the wall act with regard to focal distance?

The image above has about a 4 foot focal distance.

Camera Obscura [1] - lots to learn!

Image: George Samuel - about 3.5 minute exposure.

AttachmentSize
Camera_Obscura_2_0170.jpg [2]375.21 KB

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Source URL (retrieved on 04/07/2025 - 10:09): http://66.228.45.157/content/camera-obscura-how-we-really-see-things

Links:
[1] http://en.wikipedia.org/wiki/Camera_obscura
[2] http://66.228.45.157/system/files/Camera_Obscura_2_0170.jpg