NIKON Nikon AF D 80-200 mm ED
It is a very popular lens.
Speaking of 80-200 mm it is a representative lens of Nikkor telephoto zoom.
A popular zoom lens with a history.
Zoom is straight, not rotation.
This is D type.
D = Distance
Built-in encoder linked with lens distance ring,
If you focus (AF / MF) during shooting
Distance information to the subject is transmitted to the camera body side,
Thereby achieving more accurate exposure control and dimming control.
Among the lenses having distance signals,
Those having an aperture ring in the lens body are referred to as “D type”.