What do we need in order to take and process photographs? A camera, time, patience, lenses, computer skills ... the list could go on almost indefinitely. However, we could have all the equipment we wanted but without light, there would be no photograph.
The first part of the word photography is derived from the Greek word phos, which means light. The second part, graphy, also derives from a Greek word, graphein, which means to write. And so we have photography, which in its most literal sense means light writing.
