What best defines a zoom lens?

What best defines a zoom lens?

• A. A fixed focal length lens
• B. A lens with a focal length that can be changed during a shot
• C. A zoom lens
• D. A macro lens

Answer: (B)

A zoom lens is defined by its adjustable focal length, allowing you to change how much of the scene you capture and how large the subject appears without moving the camera. By turning the zoom ring, you vary the focal length over a range (for example, from wide to telephoto), which changes the field of view and magnification. This is different from a fixed focal length lens, which has only one magnification and cannot zoom. A macro lens, while great for close-up shooting, is specialized for close focusing and high magnification at short distances, not for changing focal length. So the description of a lens whose focal length can be changed during a shot best captures what a zoom lens is. In practice, you can use it to reframe a scene on the fly, either before taking a shot or, in video, while recording.

A zoom lens is defined by its adjustable focal length, allowing you to change how much of the scene you capture and how large the subject appears without moving the camera. By turning the zoom ring, you vary the focal length over a range (for example, from wide to telephoto), which changes the field of view and magnification. This is different from a fixed focal length lens, which has only one magnification and cannot zoom. A macro lens, while great for close-up shooting, is specialized for close focusing and high magnification at short distances, not for changing focal length. So the description of a lens whose focal length can be changed during a shot best captures what a zoom lens is. In practice, you can use it to reframe a scene on the fly, either before taking a shot or, in video, while recording.