How do cameras typically cite their lens capability?

Cameras typically cite their lens capability primarily in terms of specifications such as focal length, maximum aperture, and optical zoom. Megapixels refer to the resolution of the camera sensor, indicating how many millions of pixels are captured in a photograph, but they do not directly relate to the capabilities of the lens itself.

In terms of lens specifications, focal length is usually expressed in millimeters, which is a metric unit. The question is about how lens capability is cited rather than sensor resolution, making megapixels less relevant to understanding lens performance. Therefore, focusing on the proper units and terminology used in the context of lenses can lead to a better understanding of photography.