A zoom lens is a lens whose angle of view can be changed. Fit a zoom lens.
It replaces several fixed lenses at some cost in sharpness and in light. A zoom lens saves changing lenses, which matters most where dust or rain is the real risk.
1nounzoom lensA lens whose angle of view can be changed.
“The zoom lens covered everything from a room to a rooftop.”
zoom lens is a lens.
Practised in Photography & Film