Posted by a reviewer on Amazon

I purchased the 1224mm tokina and returned it because of horrendous camera flare which the sigma does not have

Posted by a reviewer on Amazon

Granted there is some flare issues with most wide angle lenses but the tokina was totally unacceptable

Posted by a reviewer on Amazon

I didnt see any major differences in picture quality either

Posted by a reviewer on Amazon

At 12mm though it is so wide that you must be careful of distortion introduced by shooting offlevel

Posted by a reviewer on Amazon

This is not to say this particular lens is faulty and distorts but would be true of any ultrawide lens with this wide degree of coverage

Posted by a reviewer on Amazon

I owned a d80 at the time and wanted a wide angle lens so ordered a tokina 1116mm but it got back ordered so could not get it in time

Posted by a reviewer on Amazon

It has good build quality too being an ex series lens also comes with extended five year warranty if bought from authorized dealers

Posted by a reviewer on Amazon

As always when buying third party lenses there is an element of doubt regarding the quality of the lens itself