Hi all , i recently bought a canon 5d mark ii (used condition) and 2 canon lens , the 50mm f1.8 and 28 f2.8.  
The thing is that i am really not sutisfied at all by the performance when i am shooting landscapes.  
The quality is really poor. 
I spend a lot of time editing just to improve the quality of the shoots but i am still really unhappy with the results. 
I checked out lots of videos in vimeo and youtube to see if this problem comes from the permormance of the lens but i am still confused.  
Especially when i am shooting the sea the results are really awfull. 
  
sample here http://www.youtube.com/watch?v=borU-D7FjFo&feature=youtu.be 
Is this normal shot for my equipment ? 
If the performance problem comes from the len , which one you suggest to buy especially for landscape shooting ? 
I am thinking about the canon 24-105 l is F4 
  
Thank you  
and ...sorry for my english