What Photography Is and Why Its History Matters

Photography is more than a way of making pictures. It is a technology, an art form, a social record, and a cultural force that has shaped how people see themselves and the world. In this opening lesson, Professor Christina Ross introduces what photography is, how it differs from drawing, painting, and film, and why its history matters for understanding modern visual culture.

We will focus on the big ideas that underpin the whole course: photography as a process of light, chemistry, and later digital data; photography as both evidence and interpretation; and photography as a medium that has influenced memory, science, journalism, identity, and power. Detailed technical developments and major historical periods will come later, but this lesson gives you the conceptual foundation you need to follow the story of photography with confidence.