What is Camera lens?
[[File:Lens Canon EF 50mm f1.4.jpg|right|thumb|A photographic lens: the Canon's EF 50mm F1.4 USM, an example of a prime lens (single [[focal length]] lens) and normal lens]] A '''camera lens''' is the part of a [[camera]] that directs light to the [[Photographic film|film]] or, in a [[digital camera]], to a [[computer chip]] that can sense the light. Many cheap lenses are plastic but better ones are made from [[glass]]. The lens makes an [[image]] by focusing the light.{{fact|date=July 2022}} The majority of cameras only have one lens that users cannot change or take out. This is called a ''fixed lens'' design. More expensive cameras usually have lenses that come off, so anyone can take out one lens and put in another. A lens may be simple, or may actually be made of several [[Lens (optics)|lenses]]. [[Photographer]]s can use different lenses (objectives) to make different kinds of pictures. For example, a [[telephoto lens]] can take a picture of something far away. A [[ wide-angle lens]] is the opposite. A [[zoom lens]] is more versatile; it can do both. There are many kinds of lenses. The study of lenses and how they work is called [[optics]]. Lenses for large [[sheet film]] cameras are especially difficult to design. Cameras and their lenses have been made since the 19th century. Some from before [[World War II]], are still usable today. [[Computer]]s now let [[engineer]]s make better lenses, though, because they can calculate the way that light goes through the lens and find the best design for each task. Together with lenses, filters, macro lenses, teleconverters, wide-angle and tele attachments are used. {{tech-stub}} [[Category:Camera lenses| ]]