For more ultra wide angle would remain only the 14mm, but can no longer zurückgereifen the zoom range you.
Return to text. As already described in the tests, the lens blurs, it was clear to me, but not the extent.
It is not as if you get only pixels mud, but not the quality you expect from an L lens.
If I to my 70-200mm 2.8 II comparisons, the 16-35er acts badly blurred. Of course I am aware that
you can not compare it with 70 or 200mm an ultra wide angle with 16mm.
Have on my 5D Mark III, with different focal lengths over the whole zoom range of 16-35mm and aperture 10, Tripod
Made mirror lock on (to exclude any camera shake) test pictures and the sharpness satisfies me, unfortunately not.
But is a very subjective decision.
Conclusion:
It's a great lens with an interesting zoom range, which delivers great pictures. But expecting for nearly 1,400
I a little more.