Numbers on Camera Lenses – What do they Mean? About Focal Length, Zoom, Aperture

Do you have a new camera and are wondering what all those numbers on the lens mean? Are you shopping for a new lens and all those same numbers are making your head spin? You’ve come to the right place!

In this video, I’ll explain the 3 basic characteristics of all lenses. These characteristics are displayed in the form of embedded numbers and letters on the lens, and they stand for Aperture (ie “1:3.5-5.6”), Focal Length (ie “18-55mm”), and Lens Filter Diameter (ie “⌀ 62mm”).

FREE Download – Lens Cheat Sheet: Print this out, keep it in your camera bag!

Aperture Image used in video: By KoeppiK – Own work, CC BY-SA 4.0,