A camera is a device used to capture and store images or videos by recording light through a lens. It works by focusing light onto a sensor or film, creating a visual representation of a scene. Modern cameras come in various types, including DSLRs, mirrorless, and smartphone cameras, each offering different features and capabilities. With advancements in technology, cameras now have high-resolution sensors, image stabilization, and AI-enhanced features, making photography and videography more accessible and professional.