camera truck...

The cameratruck works in exactly the same way as the first cameras ever made. These are called pinhole cameras.

They work according to these basic principles:
Light enters a sealed chamber through a tiny opening, and falls onto the opposite wall inside. Here it produces an inverted image of the world outside.

The cameratruck uses this same principle only amplified thousands of times. The cargo box of the truck becomes our sealed chamber, and the aperture is a small hole in one side.

As the light enters the truck, it falls onto giant sheets of photographic paper pinned to the opposite wall. This is how we are able to create our giant negatives, almost three metres wide.