Quote Originally Posted by conropl View Post
Agree with both above... too much for a 5dII, and you would be better off with a 6d.

One other point though - Going full frame would make everything seem even further away. You lose the crop factor and would need to crop more in post or get closer. If you go full frame that 400mm may seem a little short.
X2

Also keep in mind the 5D uses CF cards not SD and the 6D sd cards. one less expense in transition.

But.. In the long run a good lens is better than the popular body of the moment.