[kentcp]

Wow !! Thanks to everyone sharing your view and info here...Also, special thanks to Markus.



In the means time, look like 14-24 f2.8 is the best choice if budget is not an issue.



As for filter, I notice market start produce special filter kit for 14-24mm:



1) Cokin CE499 X-Pro kit

http://www.adorama.com/CKCW499.html



2) Lee Filter - SW150 Holder System

http://www.leefiltersusa.com/camera/news/articles/ref:N4BA239E9E47F5/



Let me study the Zeiss...