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zooms prototypes Tokina
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PostPosted: Tue Apr 16, 2013 11:41 pm    Post subject: zooms prototypes Tokina Reply with quote
A short one : Back in the eighties, Tokina was ready to launch two fast zooms f/2-2,5 : a 35-70mm & 60-120mm.
Isn't incredible ?

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PostPosted: Wed Apr 17, 2013 2:58 am    Post subject: Reply with quote
edited

Last edited by bernhardas on Sun Apr 17, 2016 7:23 am; edited 1 time in total


PostPosted: Wed Apr 17, 2013 6:53 am    Post subject: Reply with quote
Very interesting.

They propably just couldn't get that into production.


PostPosted: Wed Apr 17, 2013 9:26 am    Post subject: Reply with quote
Thanks for posting this!
I don´t like zoom lenses, but I think many photographers would be happy to have faster zoom lenses.
Would be very interessting to see the quality of these prototypes.


PostPosted: Wed Apr 17, 2013 9:45 am    Post subject: Reply with quote
bernhardas wrote:
But i am really curious how these would have performed.


Like most Tokina lenses, very soft at widest aperture.


PostPosted: Wed Apr 17, 2013 10:41 am    Post subject: Reply with quote
Bille wrote:
...
Like most Tokina lenses, very soft at widest aperture.


Oh, I read very good things about the ATX 90 Macro, I had good experiences with the 60-300, and I think even the 80-200/2.8 was not bad (only few short tests made).


PostPosted: Wed Apr 17, 2013 1:52 pm    Post subject: Reply with quote
kansalliskala wrote:
They propably just couldn't get that into production.

Most probably. Otherwise they would have released a lens like that for a crop sensor. Instead, they made a 50-135/2.8.


PostPosted: Wed Apr 17, 2013 6:05 pm    Post subject: Reply with quote
kansalliskala wrote:
Very interesting.

They propably just couldn't get that into production.

I believe they actually elected to make them constant-aperture, instead.. which explains the AT-X 35-70mm f/2.8 and AT-X 60-120mm f/2.8 zooms.


PostPosted: Wed Apr 17, 2013 6:28 pm    Post subject: Reply with quote
edited

Last edited by bernhardas on Sun Apr 17, 2016 7:24 am; edited 1 time in total


PostPosted: Wed Apr 17, 2013 7:01 pm    Post subject: Reply with quote
I have both the 35-70mm F2.8 and the 60-120mm F2.8 and they are both superb lenses and I would
not consider them soft wide open either...


PostPosted: Wed Apr 17, 2013 11:57 pm    Post subject: Reply with quote
Bille wrote:
bernhardas wrote:
But i am really curious how these would have performed.


Like most Tokina lenses, very soft at widest aperture.


Sorry, but I can't agree with this.....

Most Tokina AT-X lenses are not very soft at the widest aperture. In fact, much of the AT-X range are quite the opposite. The most common failing with Tokina lenses is the CA, which luckily pairs very nicely with Nikon DSLRs which have auto CA correction.

I have a number of Tokina AT-X lenses, and most are very nice. The MF ones include:

Tokina AT-X 80-200mm F2.8
Tokina AT-X 60-120mm F2.8
Tokina AT-X 24-40mm F2.8 (not so sharp at F2.8 )
Tokina AT-X 12-24mm F4 (AF lens)

The older Tokina AT-X 35-200mm (this one is older and just ok)
Tokina 80-210mm F4-5.6 (slow but sharp)


PostPosted: Thu Apr 18, 2013 8:35 am    Post subject: Reply with quote
I still think that the Tokina RMC 4/28-80 is one of the best manual zooms.


PostPosted: Fri Apr 19, 2013 5:21 pm    Post subject: Re: zooms prototypes Tokina Reply with quote
Phenix jc wrote:
A short one : Back in the eighties, Tokina was ready to launch two fast zooms f/2-2,5 : a 35-70mm & 60-120mm.
Isn't incredible ?


I had also read the info on a photokina review

PERHAPS (it is a supposition) the 35-70 2.8 production model is based on the same optical design than the prototype 2/2.5 but with stop compensation at fixed 2.8 for better optical quality (and not too softness wide open !)
Do not forget than 99% of 35-70 3.5 lenses are in fact 2.5/3.5 lenses with stop locked to 3.5 for better iq (except tefnon 2.5/3.5 lens sold as soligor, access.. and angenieux 2.5/3.3)

Idem for 60-120mm 2.8 production model
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