A camera is a device that captures and records still images or moving pictures. It consists of a lens that focuses the light onto a photosensitive surface, which could be a film or a digital sensor. Cameras are widely used in various fields, including photography, cinematography, surveillance, and video conferencing. They are available in different types and models, ranging from simple point-and-shoot cameras to complex professional-grade DSLRs and mirrorless cameras. Cameras record visual information and allow users to preserve memories, express creativity, and communicate visually.