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From: Jack Sprat on 21 Jan 2010 11:11
I've tried a 25 year old Kiron 2X teleconverter with Nikon mounts on
my new Nikon D3000 DSLR and Nikkor 55 to 200 zoom lens and I've got a
problem. On manual mode I can adjust the shutter speed but have no
control over the aperture.

Anyone know of a fix for this? Any help would be appreciated.

JS
From: Peter on 21 Jan 2010 11:30
"Jack Sprat" <jacksprat(a)eatsnofat.com> wrote in message
news:dougl5diesd0iq4dj7rsbd3v779tq2nf6g(a)4ax.com...
> I've tried a 25 year old Kiron 2X teleconverter with Nikon mounts on
> my new Nikon D3000 DSLR and Nikkor 55 to 200 zoom lens and I've got a
> problem. On manual mode I can adjust the shutter speed but have no
> control over the aperture.
>
> Anyone know of a fix for this? Any help would be appreciated.
>
> JS


There may not be. The D3000 has electronic contacts. The old teleconverter
you have does not. I do not know if your converter is AI. If it is not AI
you are SOL. Also I do not know whether you camera has a setting for non-cpu
lenses. You should check your manual for that information. If it does, you
will have to use that setting. If not, you are SOL.


BTW you may find this information interesting:
http://www.mit.edu/~cai/nikon/kiron2x.html

HTH

--
Peter

From: Darrell A. Larose on 21 Jan 2010 11:33

"Jack Sprat" <jacksprat(a)eatsnofat.com> wrote in message
news:dougl5diesd0iq4dj7rsbd3v779tq2nf6g(a)4ax.com...
> I've tried a 25 year old Kiron 2X teleconverter with Nikon mounts on
> my new Nikon D3000 DSLR and Nikkor 55 to 200 zoom lens and I've got a
> problem. On manual mode I can adjust the shutter speed but have no
> control over the aperture.
>
> Anyone know of a fix for this? Any help would be appreciated.
>
You can't.. The 55~200 has no aperture control on the lens, the old Kiron
teleconverter has no electronic contacts for the body to control the
aperture. So you at the end have a 110~400 manual focus lens that can only
be used wide open. You will have to buy a newer teleconverter, sorry!

Tamron, Kenko et al do make modern AF versions


From: Savageduck on 21 Jan 2010 11:40
On 2010-01-21 08:11:33 -0800, Jack Sprat <jacksprat(a)eatsnofat.com> said:

> I've tried a 25 year old Kiron 2X teleconverter with Nikon mounts on
> my new Nikon D3000 DSLR and Nikkor 55 to 200 zoom lens and I've got a
> problem. On manual mode I can adjust the shutter speed but have no
> control over the aperture.
>
> Anyone know of a fix for this? Any help would be appreciated.
>
> JS

There is no fix.
The 55-200mm is a "G" lens and as such does not have an aperture adjustment.
If you are going to use any teleconverter with this lens it would need
full electronic pass through between the lens and camera. I seriously
doubt a 25 year old 2X Kiron is going to give you decent results.

As far as teleconverter compatibility goes not even the Nikon TC's will
work with the 55-200mm.
I would forget the idea, if you want a bit more reach at a reasonable
price consider the AF-S VR Nikkor 70-300mm f4.5-5.6G IF-ED.

--
Regards,

Savageduck

From: Peter on 21 Jan 2010 12:01
"Savageduck" <savageduck1@{REMOVESPAM}me.com> wrote in message
news:2010012108402778840-savageduck1(a)REMOVESPAMmecom...
> On 2010-01-21 08:11:33 -0800, Jack Sprat <jacksprat(a)eatsnofat.com> said:
>
>> I've tried a 25 year old Kiron 2X teleconverter with Nikon mounts on
>> my new Nikon D3000 DSLR and Nikkor 55 to 200 zoom lens and I've got a
>> problem. On manual mode I can adjust the shutter speed but have no
>> control over the aperture.
>>
>> Anyone know of a fix for this? Any help would be appreciated.
>>
>> JS
>
> There is no fix.
> The 55-200mm is a "G" lens and as such does not have an aperture
> adjustment.
> If you are going to use any teleconverter with this lens it would need
> full electronic pass through between the lens and camera. I seriously
> doubt a 25 year old 2X Kiron is going to give you decent results.
>
> As far as teleconverter compatibility goes not even the Nikon TC's will
> work with the 55-200mm.
> I would forget the idea, if you want a bit more reach at a reasonable
> price consider the AF-S VR Nikkor 70-300mm f4.5-5.6G IF-ED.
>


Or, if the OP wants cheap, he can get the plain vanilla version for $125,
imported. I suspect from his post that the OP is on a very limited budget
and might not want to spend the extra bucks.
And yes, I know Bruce/Tony gave it a bad review.

--
Peter

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