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Teleconverter Nikon TC-17E II 1.7x Auto Focus

Rubens Távora , Aug 09, 2007; 12:17 p.m.

Is there any big issue when using this TC with a:

a) Nikon 80-200mm f/2.8D ED AF Zoom-Nikkor

and Second Option:

b) Sigma 100-300mm f/4 EX DG IF HSM APO

Just in case of having the Sigma the compatibility exclusively goes to Sgma TC? If it is so, is there any Sigma TC as Nikon quality?

Thanks, Rubens

Responses


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Shun Cheung , Aug 09, 2007; 12:42 p.m.

There are 4 different versions of the 80-200mm/f2.8 AF. Only the very last version is AF-S and all TC-nnE teleconverters are only compatible with AF-S (and AF-I) lenses.

See this thread on the 4 versions of 80-200mm/f2.8 AF: http://www.photo.net/bboard/q-and-a-fetch-msg.tcl?msg_id=000nBZ

You cannot mount any TC-nnE converters onto the non-AF-S versions, unless you choose to file off the extra tab on the TC (at your own risk), and even so, there is no AF: http://nikonpages.heymanphotography.com/tcmod/

Rubens Távora , Aug 09, 2007; 01:42 p.m.

Thanks Shun! In fact, I saw this lens as used in BHPHOTO NY and there is nonthing more tham basic especification. I will check it. And about TC, can I use with Sigam?

Michael R. Freeman , Aug 09, 2007; 02:50 p.m.

"And about TC, can I use with Sigma?"

The TC-17E II will not physically mount on anything other than specific AF-S *Nikkor* lenses, so no, you can't.

You can find a list of Nikkor lenses compatible with the TC-17E II here: (link)

(Note: that list is incomplete, as the AF-S VR Micro-Nikkor 105mm f/2.8G is also compatible)

Michael R. Freeman , Aug 09, 2007; 02:56 p.m.

And here's why it will only mount on the above lenses ...


...

Nick White , Aug 09, 2007; 04:42 p.m.

The Kenko/Teleplus AF converters are compatible with both the Nikon and Sigma lenses. http://www.kenko-tokina.co.jp/e/index.html

Don Cooper , Aug 09, 2007; 06:37 p.m.

My modified (tab removed) TC17E will not autofocus with my Sigma 100-300 F4. It tries but just chatters and doesn't obtain focus. The TC14E (again tab removed) works well with the Sigma, However the Sigma 1.4X provides the same quality and autofocus capability at about half the price.

Shun Cheung , Aug 09, 2007; 07:30 p.m.

Nikon AF becomes unreliable if the effective maximum aperture on your lens drops below f5.6. Below f8, AF is almost useless.

When you stick a 1.7x TC onto an f4 lens, you are below f5.6. With a 1.4x TC, you lose a stop from f4 and will be right at f5.6.

Joe Degennaro , Aug 28, 2007; 06:36 p.m.

Shun, I am confused. I just bought a 300afs f/4, my understanding re: the nikon 1.7 is that it will keep the aperture at or below 5.6 allowing the 300mm AFS lens to autofocus. It may be a little slower than the 1.4 but it should autofocus. Am I incorrect and do I need to trade the 1.7 for the 1.4 and suffer a monet loss??? Thanks

Joe Degennaro , Aug 28, 2007; 06:37 p.m.

Sorry Shun, that would be money, if i had a Monet I wouldn't be worried about MONEY


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