system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why are binoculars and riflescopes expressed in magnification, but camera lenses are expressed in focal length?
gpt
Binoculars and rifle scopes are additional lenses in front of our camera system: the human eye. They change our innate view by the magnification.

Camera lenses are just one part of the camera system. The overall camera properties depends on the lens focal length and the size/specifications of the image sensor.