Re: Nikon 300 mm f/4?

Stephen,

And remember not all Nikkor lenses are made by Nikon. Some of the
consumer lenses are made by other companyies, Tamron being one of
them.

Scott in tAComa

--- In NikonLenses%40yahoogroups.com">NikonLensesyahoogroups.com, Stephen AIPP <dbmaster...> wrote:
&gt;
> My own preference for glass is Nikkor. Personally I wouldn't touch
> anything else but that is my choice. I have seen some great great
> shots done with Sigma lenses.
>
> To give you an idea of what you can get from Salesmen when I was
> shopping for my first Nikon one salesman told me that Sigma was a
> lens manufacturer and Nikon was not! Sigma he said put it's glass
in
> a vat and sent the dross off the top to Nikon for Nikkor lenes!!!!!
>
> Talk about an outright lie. None the less there are some decent
Sigma
> lenses it all comes down to price and features. Plenty of Nikkors
are
> less than the top pro lenses but they cost less and weigh less
too.
> What do you want from your lens?
&gt;
> Keep reading and looking up whatever information you can find to
help
> you.
>;
> Stephen
>
> On 10/10/2007, at 10:46 PM, Shobhit Bhatnagar wrote:
&gt;
> >
>; > Thanks Guys, I guess I would go with the 70-300 VR instead of
> > 55-200 VR, it would be better to save up and go for a better
lens
> > than compromise now and regret later!
&gt; >
>; > How do you guys feel about the Sigma HCM lens doing the rounds
for
> > 40x, my dealer advised me against them stating that the opticals
> > are not even close to Nikkor.
> >
>; > Thanks
&gt; >
>; > Shobhit
> >
>;

Scott Gibson wrote:
&gt; And remember not all Nikkor lenses are made by Nikon. Some of the
> consumer lenses are made by other companyies, Tamron being one of them.

I have read this claim before. Can you provide a reference to a source for
this information?

--
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Jim Saklad mailto: jimdoc%40iname.com">jimdociname.com

Jim Saklad wrote:
&gt; Scott Gibson wrote:
&gt;> And remember not all Nikkor lenses are made by Nikon. Some of the
>>; consumer lenses are made by other companyies, Tamron being one of them.
&gt;
> I have read this claim before. Can you provide a reference to a source for
> this information?
>

There are several Nikon's known to be Tamrons. The 28-200, 28-300 and
the non-VR 70-300's are Tamron designs. Note that tamron uses different
barrel designs for their versions. A straight comparison of the optical
design will reveal this (and the fact that the Tokina and Sigma 8-400's
are unrelated to the Nikkor).

In fact all of the 1st party 28-200's are Tamron-built, as are all but
the Canon L 28-300.

-Adam

Neither will confirm. I know that at least one poster at nikonians.org
several years ago disected a 70-300 ED and Tamron 70-300 LD and
confirmed that the only differences are coating and the Tamron's better
focus helical. The 70-300G is known to have the same optical design.

-Adam

=Sunjammer= wrote:
&gt; *Such claims seem at least somewhat plausible...but where can I find
> them authenticated?*
&gt; *Does either Nikon or Tamron affirm this? If so, were?*
&gt; **
> *=SJ=*
&gt; **
> Jim Saklad wrote:
&gt; > Scott Gibson wrote:
&gt; >> And remember not all Nikkor lenses are made by Nikon. Some of the
> >> consumer lenses are made by other companyies, Tamron being one of them.
&gt; >
>; > I have read this claim before. Can you provide a reference to a
> source for
> > this information?
> >
>;
> There are several Nikon's known to be Tamrons. The 28-200, 28-300 and
> the non-VR 70-300's are Tamron designs. Note that tamron uses different
> barrel designs for their versions. A straight comparison of the optical
> design will reveal this (and the fact that the Tokina and Sigma 8-400's
> are unrelated to the Nikkor).
>
> In fact all of the 1st party 28-200's are Tamron-built, as are all but
> the Canon L 28-300.
>
> -Adam
&gt;

>> I have read this claim before. Can you provide a reference to a source
>>; for this information?
>
> There are several Nikon's known to be Tamrons. The 28-200, 28-300 and the
> non-VR 70-300's are Tamron designs. Note that tamron uses different
> barrel designs for their versions. A straight comparison of the optical
> design will reveal this (and the fact that the Tokina and Sigma 8-400's
> are unrelated to the Nikkor).
>
>; In fact all of the 1st party 28-200's are Tamron-built, as are all but
> the Canon L 28-300.

I have never liked the phrase "known to be"....

Let me re-phrase my question.

Can you provide a reference to a source for this information?

--
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Jim Saklad mailto: jimdoc%40iname.com">jimdociname.com

Jim Saklad wrote:
&gt;>> I have read this claim before. Can you provide a reference to a source
>>;> for this information?
>&gt; There are several Nikon's known to be Tamrons. The 28-200, 28-300 and the
>>; non-VR 70-300's are Tamron designs. Note that tamron uses different
>>; barrel designs for their versions. A straight comparison of the optical
>>; design will reveal this (and the fact that the Tokina and Sigma 8-400's
>>; are unrelated to the Nikkor).
>>
>> In fact all of the 1st party 28-200's are Tamron-built, as are all but
>>; the Canon L 28-300.
>
> I have never liked the phrase "known to be"....
>
> Let me re-phrase my question.
>
> Can you provide a reference to a source for this information?
>
>

Not for the Nikons, I can actually for the Pentax 28-200

http://www.bdimitrov.de/kmp/lenses/zooms/short/FA28-200f3.8-5.6.html

Unfortunately the thread on the 70-300 disection on Nikonians happened
several years ago, so it's not to be found, and Nikon and Tamron are
understandably unlikely to publicly state the fact.

-Adam