The idea here was to take a boring subject (so the investigator would not be distracting by the content and could concentrate on the effect) and take a series of photos varying nothing but the EV setting on the camera.
We tried it at first without a flash. Boring. So we turned on the night flash and took this series of photos. The time was around 7 p.m., March 28, 2003 in Upstate New York. Because of this the ambient light went from minimal to none pretty quickly. The sun went down about 15 minutes before we went outside.
Enough gab. Here's the pictures.
