This document provides a history of photography and cameras. It discusses how photography originated from the camera obscura and the earliest photographs taken in the 1820s. It summarizes key early developments like the first color photograph in 1861 and first high speed photograph in 1878. The document then describes the basic parts and working of a camera, including the lens, viewfinder, shutter speed dial, and aperture ring. It outlines different types of cameras like folding cameras, box cameras, and view cameras. Finally, it discusses camera lenses and the effects of focal length on field of view, magnification and depth of field.