The word 'telephoto' is a modern compound, first used in the late 19th century with the invention of specialized camera lenses. It combines the Greek-derived form 'tele-', meaning 'distant', with the shortened form 'photo', from 'photography' (itself meaning 'drawing with light'). The term's logic is perfectly transparent: a 'telephoto' lens is one that captures 'light' from 'far away' objects, bringing them into close visual proximity. This construction follows a classical pattern of using Greek elements to name new technological concepts, creating a precise and internationally understood term for an optical device.

Structure: tele (distant) + photo (light) - tele: From Greek tēle-, meaning 'far off, at a distance'. It functions as a combining form indicating distance. - photo: From Greek phōs (genitive phōtos), meaning 'light'. It functions as a combining form relating to light or photography.