I love my Tokina AT-X 28-80/2.8 and it's my principal lens for my Canyon
5D. But it's an autofocus lens and relatively recent in the Tokina
stable (just discontinued last year) so I don't know if its optical
formula comes anywhere near the older, OM mount Tokinas.
You can see it tested here at 28mm against a Kiron 28/2 and a Zuiko
28/2.8. Unfortunately, the Zuiko turned out to have an aperture problem
that day (since repaired) that wouldn't allow it to open past 5.6.
Here's the overall test image with yellow markers for the test areas.
<http://www.chucknorcutt.com/temp/Test%20image%2C%20center-edge%20markers.jpg>
Here's a center 1:1 crop
<http://www.chucknorcutt.com/temp/Center%20performance.jpg>
and an edge 1:1 crop
<http://www.chucknorcutt.com/temp/Edge%20performance.jpg>
For a fast zoom I think it performed very well. The fast Kiron was a
disappointment until it finally came into its own at f/8.
Chuck Norcutt
James King wrote:
>
> have any of you experience of the
> tokina 28-80 f2.8,
> tokina 28-70 f2.8 (constant)
> Tokina 28-70 f2.6-2.8?
>
> Any good, any better than the zuiko 35-70 f3.6?
> a while ago I tried the Tamron 35-105 SP f2.8 against my little zuiko
> and found the edges and the corners of the Tamron lacking. Not to
> mention rather more distortion than I was expecting..
> James
>
>
>
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