Conclusion: With a crop factor of 1.5x on the *istD cameras, this equates to a field of view similar to 21mm on a 135 format camera and is a little less wide than most of the opposition are achieving at the present time. On top of this, the performance of this lens wide open is not as good as it could be, especially given the price. Along with the other little niggles on picture quality that should not occur in a modern design of lens I was rather disappointed.
Pros: Good build quality, Nice protective pouch
Cons: Optically disappointing, especially wide open, High price for performance