"What makes photography a strange invention is that its primary raw materials are light and time"

John Berger's quote speaks to the unique nature of photography as an art kind. Photography is a strange innovation because it counts on 2 aspects that are intangible and challenging to control: light and time. Light is the source of the image, and time is the period of the direct exposure. The professional photographer needs to be able to catch the right amount of light and the right amount of time in order to produce an effective picture. This is what makes photography a tough and satisfying art form. It requires a good deal of skill and creativity to be able to record the ideal moment and the ideal light. Photography is a special art kind that enables us to capture and maintain moments in time that would otherwise be lost permanently.