Auto extension tubes

[rick_jones5]

Did Nikon ever manufacture auto extension tubes compatible with the

old non-AI lenses (auto K tubes)? I use an M2 periodically but would

like a little more flexibility. If Nikon didn't make any did anyone

make a set with quality equal to the PK tubes?

[david_h._hartman]

Yes. The PK-1, 2 and 3 and the PN-1. These are fully auto pre-AI tubes.

[david_h._hartman]

I should have mentioned, you still use the old f/5.6 rumba with the early PK tubes. Please see attached for more information.

[Robert_Lai]

Dave had a typo - it's the PN-11 (not PN-1). This is a 52.5mm extension tube with auto-diaphragm and AI linkages. Most importantly, it has a great tripod collar for all those heavy lenses that should have had a tripod collar, such as the 180mm f/2.8.

[Robert_Lai]

Sorry Dave, you were right. Looking at your page from 1978, it was called PN-1 back then. Current version is PN-11. What's the difference?

[Robert_Lai]

Sorry again, I should read before I post. PN-1 was non-AI (used meter prong), PN-11 is AI.

[rick_jones5]

Thanks for the info. Now I know what to look for.

[kenneth_logan]

Nature photog John Shaw wrote glowingly about the PN-11 52.5mm Nikon extension tube: "...Nikon makes a special extension tube that I highly recommend for Nikon owners, the 52.5mm long PN-11 tube. If you need this much extension, the feature that distinguishes this tube is that it has a rotating tripod collar that can be used to mount the entire camera assembly on the tripod. To shoot vertically, you simply loosen the collar and rotate the camera; you don't have to flip the tripod head to the side. By rotating the tube, the weight of the camera and the lens remains above the tripod axis, and there is less vibration than when the bulk of the equipment is cantilevered out to the side. Why other manufacturers don't offer such an extension tube is beyond me." _John Shaw's Closeups in Nature_, 1987, p. 60.

[payyakkil]

I read about the PN-11 tube in John Shaw's Closeups in Nature. Does anyone know any other extension tubes which can be used with an N80 which has a tripod collar? Anyone knows whether Kenko AF tubes have this? I heard Kenko is the only one which has AF coupling.

[mskovacs]

NOPE, nobody but Nikon makes the collared tube. I don't even think any other camera manufacturer has made these for any type of lens mount.

[david_h._hartman]

<em>"Yes. The PK-1, 2 and 3 and the PN-1. These are fully auto pre-AI tubes." --David H. Hartman.</em><br>

<br>

The post above does not get indexed properly due to the abbreviations used. This post should help future searches for information on the PK-2 and PK-3 pre-AI auto extension tubes. I�m Sorry, I didn�t realize this until trying to find my own post with a Google.com search.<br>

<br>

Yes. The PK-1, PK-2 and PK-3 and the PN-1. These are fully auto pre-AI tubes.