I built a camera obscura on the ECU campus the Fall semester of 2007.
Mini information sessions were held for viewers before entering, here's me lecturing to students about the show.
Here's an installation shot with someone walking in front of my camera. Notice the foam-core covered windows, and mylar hung from the ceiling.... the mylar acted as gound-glass and captured the image.
Lights out...
Camera obscura interior photograph on 4x5 sheet film
Camera obscura interior photograph on 4x5 sheet film
Show poster