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I love this lens (2009-05-14)
I bought this lens on a whim after wanting an extreme wide angle lens. It was either this lens or the Sigma 10-20mm. In the end, I bought the Tokina 10-17 due to my enjoyment with fisheye photos and the fact that it looked much easier to convert fisheye photos into good looking rectilinear images than vice versa.

Though, I'll start with the bad. Chromatic aberration is rather bad. You can see it frequently, especially if you shoot photos outdoors. I'm also not a fan of the friction based lens cap.

With that out of the way, on to the good. The lens is solid. It feels as though it can survive a drop (which I always enjoy in a lens).

Because it's a wide angle lens, the focusing elements don't travel very far, making focus fairly quick (albeit noisy).

The lens is WIDE. At 10mm, I can easily take a picture of a room and have all 4 walls in the photo. At 17mm, you have a good wide angle with minimal barrel distortion. Various defishing programs can convert the wide angle shots, even at 10mm, into good looking rectilinear images.

At the end of the day, I have very few regrets about this lens. I can stand across the street and get the entirety of the Sears Tower, plus street and sky into a single frame! I can stand in a small room with a group of people and get everyone in the same frame.

I highly recommend this lens. If you have any post production software or ability, this lens is about as good as it gets for shooting wide.

I LOVE IT! (2009-05-12)
I am absolutely 100% satisfied with this purchase. It was everything I expected and more. I'm glad I made the decision I did and I'll be certain to recommend this product to my friends.

the best for the price (2008-12-30)
It is the best fisheye for the price the quality is 100% color and every thing
I had fun using it fast focus I recommend it for every one ((ammeter or pro))
Although I had one problem with it. It is too hard to fit it to the camera I bought 2 lenses
For 2 cameras {canon 400d and canon 40d} and I faced the same problem on both cameras
You will have to use force to fit them. Also I faced the same problem on the lens cap it too hard to remove and put on
Other then that the lens is 100% perfect I uploaded some pics I took with the lens and you can visit my web page
For more pics on www.flickr.com/photos/tj_wotaid

I love this lens (2008-02-15)
Great lens for anyone who wants a fisheye effect. Happily, if you don't want a fisheye, you can adjust the focus so the picture has a wide-angle -- but isn't distorted. Great product.

Tokina 10-17mm DX af Nikon F mount (2007-12-14)
Works great with my Nikon D200, even with the SB-800 flash.
(mentioned a flash, due to the review stating the Canon mount version didn't work with the flash. It meters greats with the Nikon mount).
There's not too many fisheyes on the market that have a variable focal length of 10-17mm with AF. It's a great fisheye effect even with the 1.5X crop factor on some DSLRs like the D200, and even cooler when you can zoom to 17mm with the same lens, and take a photo with only a little barrel distortion. I have also used the Tokina 12-24mm af AT-X pro, and the color representation and sharpness in the photos were great, just like this one.