A few photos of a 250,000+ bat colony in Huntsville, Texas. This is an incredible thing, and I've linked a short article below. I need some help. As you can see, the bats aren't in focus. I shot twice, once trying single point focus and once in 3D. The bats are so small and so fast that the building is what gets picked up, and the bats are never sharp. Even shooting into the sky they're not sharp, even teh few I shot with flash. Used a Nikkor 55-200 and auto ISO. Best fix I can think of is to go to Liveview and focus manually on the bats I want to shoot. I can get close so I'm going to try my 50mm 1.8D lens also. Any other tricks I can try?