Cameras are used to capture real life image, that could be still or moving, and they have been used for hundred of years. The first camera that was transportable was designed by Johann Zahn in 1685, although more less practical cameras had been designed. Olden day cameras were boxes with a lens and a glass screen, and used light sensitive material to capture the image, which could be damaged if exposed to too much light. Different types of cameras have different advantages, such as some cameras take better quality images while other cameras have a better focus.