[Klaus]

Klaus I am surprised, you didn't know about the special design? ;-)

 

I like this lens a lot; it is much better than my late EF-S 10-22mm, because the edges are much sharper.

It will be interesting to see some actual measurements...

 

well, I don't know EVERY lens on the planet ;-) And you don't spot this right away from the product images.

 

The lenses are probably quite fine. My reservations are more on the camera side.