Use one or multiple extension rings for further creative capabilities.
Use one or multiple extension tubes together, placed between the lens and camera body.
The tubes can also be used for manual exposure control.
The PK-13 is a 27.5mm Auto Extension Tube. Extension tubes enable a lens to focus closer than its normal set minimum focusing distance.
An AI NIKKOR will retain automatic diaphragm and meter coupling functions, letting you compose, focus and meter at a wide-open apertures.
LCD, Video and Photo Gallery images are for illustrative purposes only.