|Tokina AT-X 11-16mm f/2.8 DX Specifications|
|Lens Construction (groups)||11|
|Lens Construction (elements)||13|
|No. of Diaphragm Blades||9|
|Closest Focusing Distance||0.3m (11.8")|
|Maximum Diameter x Length||84mm x 89.2mm (3.3" x 3.5")|
The Tokina 11-16mm f/2.8 AT-X Pro DX Lens is a lens of bests and worsts, but its price tag falls in the middle of those of this group - and noticeably lower than the most expensive lens (the Canon). For the money, the Tokina 11-16mm f/2.8 AT-X Pro DX Lens is a very strong performer optically - a very good deal.
If you shoot Canon, get the Canon 10-22mm, since it doesn't cost much more and has a much wider and longer zoom range. I have not compared its sharpness, however the Canon's distortion control is superior.