Question

Digital photography:
What is a camera?

Answer 1

A camera is a hardware device that takes photographs and consists of a lightproof box with photosensitive film or plate in the box. When a picture is taken, the camera's shutter opens and closes, exposing the photosensitive film with light recording the image onto the film.

Answer 2

A camera is an optical instrument used to record images. Cameras have various mechanisms to control how the light falls onto the light-sensitive surface.