What is the role of film in a camera?

In a traditional film camera, film serves as the medium that captures images by recording light. When the shutter opens, light enters the camera and exposes the film, creating a latent image that is later developed into a visible photograph. The sensitivity of the film to light, measured in ISO, determines how effectively it captures detail and color in various lighting conditions. Overall, film is essential for translating the scene into a tangible image.