Author Topic: Nikon Extension Tube with Full AFS Contacts  (Read 14554 times)

Akira

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Re: Nikon Extension Tube with Full AFS Contacts
« Reply #30 on: December 17, 2016, 20:13:10 »
Full AF and Aperture control?

The picture Akira just posted does not show the contact block.

Frank, you should see the teeny-weeny bit of the contact block on the camera mount side.  :)
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Frank Fremerey

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Re: Nikon Extension Tube with Full AFS Contacts
« Reply #31 on: December 17, 2016, 23:24:09 »
Akira. I found a listing at an online photo shop selling tge Kenko 1.4 for Nikon with the contact block visible.
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Bruno Schroder

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Re: Nikon Extension Tube with Full AFS Contacts
« Reply #32 on: December 18, 2016, 13:00:38 »
With the same idea in mind, I bought a AF Vivitar 1.4x and a AF Tamron 2x for cheap some time ago. They both have a 7 contacts block.
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Erik Lund

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Re: Nikon Extension Tube with Full AFS Contacts
« Reply #33 on: December 18, 2016, 13:43:50 »
do they support Nikkor-E lenses?
Erik Lund

Bjørn Rørslett

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Re: Nikon Extension Tube with Full AFS Contacts
« Reply #34 on: December 18, 2016, 14:25:34 »
About the ask the same: for such items to be eligible as candidates for "pass-through" extension, they need to preserve functionality of 'E' lenses. Plus the inner tube has to be wide enough so as not to cause vignetting.

Being robust and securing a sturdy connection to the camera is a given requirement as well.

Akira

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Re: Nikon Extension Tube with Full AFS Contacts
« Reply #35 on: December 18, 2016, 14:44:06 »
The contact blocks of Bruno's TCs have seven contacts.  The new TCs by Kenko-Tokina that are compatible with G and E Nikkors (called TELEPLUS HD) have eight contatcts:

http://dc.watch.impress.co.jp/docs/news/1032981.html

(Frank, sorry, the image of the latest TCs can be found in the webpage linked above.  The previous link is for an older TC.)

However, the 300/4.0 FP has ten contacts.   :o :o :o
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Bjørn Rørslett

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Re: Nikon Extension Tube with Full AFS Contacts
« Reply #36 on: December 18, 2016, 15:11:47 »
.... However, the 300/4.0 FP has ten contacts.  ...

So has the TC-14E.2 that Erik used as material for the pass-through extension.

Chris Dees

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Re: Nikon Extension Tube with Full AFS Contacts
« Reply #37 on: December 18, 2016, 16:33:11 »
Sorry for the somewhat late reply.
The Kenko I have is the Kenko Teleplus PRO 300 DGX 1.4x AF Teleconverter. The image is not 100% the same one as I have, but very similar. It has 8 pins on the other side.
IMHO it's not usable. AF is ok (on a D500) but IQ is lousy, but I tried only for a few images.
First one is at about 5m, the second about 25m. Both very soft and hazy (it's not the lens nor the camera ;D)
I did not tried the converter with other lenses yet.
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Bjørn Rørslett

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Re: Nikon Extension Tube with Full AFS Contacts
« Reply #38 on: December 18, 2016, 17:22:03 »
'Not usable' is apparently an understatement ....

Besides, the internal opening is small and will cause vignetting for lenses with a large exit pupil.

Bruno Schroder

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Re: Nikon Extension Tube with Full AFS Contacts
« Reply #39 on: December 18, 2016, 18:20:31 »
I don't have an E lens, so can't test but AF and metering do work fine with a 80-400 AF-S on a D750. The inner hole is 34mm on both the Vivitar and Tamron, without Dremeling. Increasing it would require touching the contact block.
Bruno Schröder

Kim Pilegaard

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Re: Nikon Extension Tube with Full AFS Contacts
« Reply #40 on: December 18, 2016, 19:22:51 »
Maybe I missed something, but what is wrong with the Kenko Auto Extension tubes - maybe too narrow?



Kim

PedroS

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Re: Nikon Extension Tube with Full AFS Contacts
« Reply #41 on: December 18, 2016, 19:34:22 »
Maybe I missed something, but what is wrong with the Kenko Auto Extension tubes - maybe too narrow?

Don't think so, but the quality is marginal and there's movement when coupled with the lens.
Body is soft plastic and locking system is, again, marginal in quality.

I have used two of them to make a PB-5 all electronic connected, thought.

Akira

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Re: Nikon Extension Tube with Full AFS Contacts
« Reply #42 on: December 18, 2016, 19:37:18 »
Don't think so, but the quality is marginal and there's movement when coupled with the lens.
Body is soft plastic and locking system is, again, marginal in quality.

Hope that problem is solved on the new models.
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Frank Fremerey

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Re: Nikon Extension Tube with Full AFS Contacts
« Reply #43 on: December 22, 2016, 12:07:38 »
Can you post a DIY guide on this operation? I am tempted to try my luck disassembling the 14E I got yesterday and making the extension tube myself
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Bjørn Rørslett

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Re: Nikon Extension Tube with Full AFS Contacts
« Reply #44 on: December 22, 2016, 12:39:18 »
That might turn out to be an expensive learning session.