A camera is a device for storing pictures and videos. A camera is a device inside of a box that takes pictures and records videos. Printers are machines that copy things using paper or you could use a 3d printer to print 3d things. Normal printers print things only on paper using ink. 3d printers print things out of plastic they print toys or etc?! :D. Printers need to have ink for them to work! Cameras need a card for them to work.