![](https://www.roemerphotoblog.com/wp-content/uploads/2013/12/10-Canon-200-400-F4.jpg)
A few weeks ago I was given the opportunity by Canon to try out their new EF 200-400mm f/4 L IS USM lens with an internal 1.4x extender. I gave the lens a good test drive shooting a college basketball game and an NFL football game. My bread and butter lens for shooting sports is a Canon...