Thanks for all the replies. I think I should present some samples 
Here's one with the 35L @f2.8-
Jumping and thumping
Now the 70-200mkII @ 160mm f2.8-
IMAGE LINK: http://www.flickr.com/photos/kin2son/8105309757/
Happy runner ^^
I just like the shot with the zoom more....The 35L shot is already cropped and I am just not totally satisfied. Maybe it's due to the boring angle.
It's really hard to get up close with the 35L when your kid is constantly on the move. And tbh when i am outdoor and have the working space, I keep asking myself why should I get so close when the end result still won't be as good as the zoom @ 200mm? So it kind of defeats the whole purpose if you know what i mean.









