me! & my luv shadow - fisheye lenses

It a one-of-a-kind zoom fisheye lens, not a wide angle lens. Fisheye lenses bend straight lines deliberately. I've owned fisheye lenses for decades. They are very difficult to use well, and fairly useless except as a special effect. Recently I've been using DxO software to stretch out the curvy images into something useful, but DxO doesn't work with the Tokina 10-17mm lens currently.

This Tokina costs the same as the real Canon or Nikon fisheye ($500 - 600), either of which which I strongly suggest instead of this lens.

For Nikon get the Nikkor 10.5mm DX.

Canon makes no fisheyes for their 1.3x and 1.6x digital cameras like the 1D and Rebel and D20 D30, but Canon does make a spectacular 15mm Fisheye for the film and full-frame cameras for the same price as any of these.

If you are serious about fisheyes, get the Canon 15mm Fisheye and a Canon 5D, which offers far superior fisheye performance over any of the other solutions. I own both the Canon 15mm and the Nikon 10.5mm.

If you want a wide angle that keeps straight lines straight, then forget this Tokina 10-17mm zoom, because it's a fisheye! Most people don't want a fisheye - they want a wide angle which isn't this 10-17mm.

If you want a wide angle, I strongly suggest instead the Tokina 12-24mm for the same price. For my Nikon I own the Nikkor 12-24mm which is more expensive. For Canon I'd get the superior Canon 10-22mm which isn't much more expensive than the Tokina. See also my explicit Digital Wide Zoom comparison.

kenrockwell.com