Which term describes a lens whose focal length can be adjusted to zoom?

• A. Fixed Focal Length
• B. Prime lens
• C. Variable Focal Length
• D. Zoom Lens

Answer: (D)

A lens that can change its focal length to alter how much of the scene you see is drawing on the ability to zoom. When you adjust the focal length, you change magnification and framing without moving the camera. The term that names this kind of lens—designed to vary focal length across a range and let you zoom in or out—is a zoom lens. A fixed focal length or prime lens stays at one focal length, so there’s no zooming built into that option. A term like variable focal length describes the capability in general, but the standard name for a lens built to smoothly adjust focal length is zoom lens.