It was the curved shape of the lens that led to its name being borrowed, in the late 17th century, from the Latin name of the lentil plant, lens culinaris. In French, another word for lens is objectif ...

Cinematographer Newton Thomas Sigel takes us through the differences between wide-angle, normal and telephoto lenses. He explains the science of each lens using examples from “Bohemian Rhapsody,” ...

Infrared light passes through the metal lens and is converted into violet light and focussed in a focal point due to the material and the special surface structures – enlarged in the magnifying glass.