Nikon PK-11A Auto Extension Ring 8mm AI
Nikon Auto Extension Rings PK and PN fit between the camera body and lens either individually or in combination. The extension rings have no optics. The PK and PN rings are used in manual focus mode and are considered non-CPU lens attachments. The PK-11A provides 8mm of extension. The AI Nikkor will preserve automatic diaphragm and meter coupling functions, letting you compose, focus and meter at a wide apertures.
|Manual focus (only)
|Nikon F Mount Ai