Tokina 300mm f/2.8 AT-X

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The Tokina 300/2.8 is a very useful lens. It's fast maximum aperture of 2.8 ensures a bright viewfinder image and the relatively small size of the lens (compared to the fast 400mm lenses) makes it easy to carry around when mounted on the camera.
At 2.4 kg the lens does not fall into the "superlight" category but it could definitely have been worse.
Autofocus feel fast and effective on this lens as you would expect for a lens in this class whereas manual focusing is rather difficult as the focusing ring turns with too little friction for my taste. The balance when coupled with the Fujifilm Finepix S2 Pro camera is very good and when used with an extension tube or a teleconverter it is nearly perfect.
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The details of this lens also adds tremendously to the usability of the lens usability: Extremely long lens hood which is reversible for protection of the lens during transportation, drop-in filter holder, rotating tripod collar with click-stops for horizontal and vertical framing and a low and very useful tripod "foot".
Optically I have a hard time figuring out this lens. I have added a small crop from one of my "less than successful" backlit images taken with the lens.
As I mentioned before this does not happen every time there is a high contrast scene - far from it!
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When it comes to using the Tokina coupled with a teleconverter I find this lens to be in the middle ground:
I get usable results when coupled with the Kenko Pro 300 1.4x but rarely so when used with my Sigma EX 2x (which is not claimed anywhere to be a good match anyway).
I particularly find the out of focus areas in pictures taken with this lens to be very nice (that may sound a bit strange but I feel it really adds to an image when the out of focus areas look like they are a natural part of the image).
Also when stopped down a bit this lens is as sharp as they come!
So to sum it up: If you want a super bright telephoto lens and you have a budget to consider you really should take a look at the Tokina - the price is half that of a "brand lens" in the same class.
Most of the time this lens performs splendidly and that is enough for me at least.
I made test images at F:2.8, F:4, F:5.6, F:8, F:11, F:16, F:22, and F:32 and cropped out a small portion (see at the end of the review the size of the crops).
I then proceded to blow up the size of the crops to 25x normal size to be able to study the quality closely.
Please note that the exposure was dialed down compared to the test images for the Nikkor 400mm and Sigma 400mm reviews because I felt it was easier to see the details this way.
The results should still be comparable however.
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| F:2.8 - Center | F:2.8 - Edge |
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| F:4 - Center | F:4 - Edge |
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| F:5.6 - Center | F:5.6 - Edge |
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| F:8 - Center | F:8 - Edge |
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| F:11 - Center | F:11 - Edge |
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| F:16 - Center | F:16 - Edge |
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| F:22 - Center | F:22 - Edge |
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| F:32 - Center | F:32 - Edge |
At f:8 this lens seems to resolve as much detail as the Nikkor 400/3.5.
This is where the Tokina does NOT shine; high-contrast situations sometimes yields less than satisfactory results.
Compared to the Nikkor 400/3.5 this lens is quite soft wide open.
Sharpness increases markedly up to around f:8 where the lens it at it's best performance.
The Sigma 400/5.6 looks softer at all apertures except f:32.

Whether this is due to blooming (camera sensor problem) or chromatic abberation I do not know but it sure does not look good!