Learning without thought is useless. Thought without learning is dangerous.
Confucius, 500 B.C.
Can scenarios of perception be created with the pinhole camera that were not anticipated by nature?
Hans Knuchel, Camera Obscura, 1992
• Light intensity decreases the further it travels from the pinhole. For instance, a 4-inch focal distance takes more time to expose than a 3-inch focal distance when the optimal pinhole is used.
• As the focal distance increases, the optimal pinhole increases in diameter. For every focal length, there is an optimal pinhole diameter. Robert Mikrut and Kenneth A. Connors developed a chart of focal distances and ...