Principles of pinhole photography

The pinhole (from the Greek sténopé meaning “small hole”) is a tiny hole through which light can enter a darkroom. It allows the inverted image of the subject to be projected inside this darkroom.

This is the principle on which all cameras work.

 

A little bit of history

In ancient times, the Greeks observed the principle. The first darkrooms were already recognised by Aristotle (384-322 BC). Leonardo da Vinci, in 1515, set out the design for the working of a “camera obscura” and in 1550, Gerolamo Cardano added a lens. Since the Renaissance, darkrooms have been used by painters to help them with the perspectives in their pictures.