I'm shooting a school basketball tournament for the next few weeks for a friend that does a video at the end of the year for the kids and I'm having some lighting/focusing issues. I'm shooting with a 5D and my 70-200 f2.8 Canon lens. I'm getting decent exposures at 1600 iso (don't ind this speed because the noise really isn't to bad on the 5D) at f 2.8 and shutter speeds around 160-200. The problem comes with focus. I shoot the hell out of every game (300-400 shots per game) to make sure I have bunches to choose from, but as reveiw them I'm finding quite a few out of focus. I'm using center weighted focus. Anyone with a 5D have any suggestions? If you've shot basketball before you'll know there's quite a few people in the shot at once (I prefer tight shots to see expressions etc) so there's lots of "spots" for the lens to focus on. I'm sure part of this is because I'm shooting at 2.8 and have a very shallow depth of field, but I was expecting better results than this. I'm not at home so I can't post a shot here. If you need to see something I can add to the post later, but hey, it's just out of focus, what's to see? Any help or suggestions would be highly appreciated. I'm getting shots for my buddy, it's just very frustrating not getting everything I think I am. Thanks in advance!