Nikon 80-200mm f2.8 ED AF Nikkor polaroid The Nikon PK-11 is an

The Nikon PK-11 is an 8mm extension tube for manual focus F-mount lenses

1/4" thread on top for camera mounting

8 lens for the Mamiya 645 camera system

This is a compact wideangle with a moderately fast aperture

Nikon 80-200mm f2.8 ED AF Nikkor polaroid The Nikon PK-11 is anThe Nikon 80 200mm f2. 8 ED AF Nikkor is a professional telephoto zoom lens with a push pull zoom action, which is a bit old school but does make manual focus use quite easy. That's a good thing, because this lens can be used on nearly every Nikon F mount SLR ever made, from the very oldest to the very newest, with varying degrees of function. Meter coupling is available for any AI compatible or autofocus camera; autofocus is available for any camera