A lens that allows you to select among multiple focal lengths without moving is a...

A lens that allows you to select among multiple focal lengths without moving is a...

• A. Telephoto lens
• B. Wide angle lens
• C. Zoom lens
• D. Macro lens

Answer: (C)

Changing focal length without moving the camera is what a zoom lens does. A zoom lens lets you vary focal length by turning a ring, giving you a range of viewing angles in one lens and allowing you to reframe or magnify a subject while you stay in the same spot. That ability to select among multiple focal lengths without physically moving is the defining feature of a zoom lens. Telephoto and wide-angle describe specific focal-length ranges and their typical uses, not the ability to adjust between many focal lengths in a single lens. A macro lens is designed for close-up work and high magnification rather than changing focal length. So the lens that best fits the idea of selecting multiple focal lengths without moving is the zoom lens.

Changing focal length without moving the camera is what a zoom lens does. A zoom lens lets you vary focal length by turning a ring, giving you a range of viewing angles in one lens and allowing you to reframe or magnify a subject while you stay in the same spot. That ability to select among multiple focal lengths without physically moving is the defining feature of a zoom lens.

Telephoto and wide-angle describe specific focal-length ranges and their typical uses, not the ability to adjust between many focal lengths in a single lens. A macro lens is designed for close-up work and high magnification rather than changing focal length. So the lens that best fits the idea of selecting multiple focal lengths without moving is the zoom lens.