Anatomy of a Nikon lens

We dissect one to show you what’s inside

1 Lens aperture

This opening controls how much light is let in.

2 Focal length

The focal length currently set is indicated by the number on the zoom ring that lines up with the central mark.

3 Zoom ring

When you turn the zoom ring, internal groups of lens elements move, changing the focal length.

4 Lens motor

Nikon autofocus lenses have motors to move the elements.

5 Front element

The big piece of glass on the front that collects the light – and which is also the most exposed to dust and vulnerable to scratches.

6 Bayonet lens mount

Attaches the lens to your Nikon. Contacts supply power to drive the autofocus and VR, and enable the camera and lens to communicate.

7 Vibration Reduction (VR)

Nikon’s image stabilization technology uses gyroscopic sensors and a micro-computer to detect and compensate for lens vibrations caused by hand shake.