I have been asked how I get the hummingbird in flight shots I take.
I shoot a Nikon D40X camera with a 300mm VR zoom lens. This Nikon will shot 2.5 frames per second on continuous shooting mode.
I stand about ten feet from the hummingbird feeder and find a place along the wall that is just about the same distance from the camera as the back edge of the feeder then use the auto focus to zoom in on that spot. It takes some trial and error to find just the right focus area.
The hummers do not like to come to the side of the feeder that I am standing on so I have to be able to focus on the other side where they will be coming. Using this focus method limits your range of focus to about a six inch deep space. Any close or farther than the zone you are focused on and you will get unfocused images.
I then turn off the auto focus on the lens so where ever I point the camera it will only focus at the point in the distance that I have set it for. If I do not turn off the auto focus the camera will be jumping around in it auto focus and I will get nothing. I then wait until a bird flies into the in focus area and start shooting continuously.
On this shoot I took 218 frames and was able to get four good and 8 fair images out of the total 218 images shot.
I use Photoshop to do some brightness and contrast adjustments and some times I do a crop and digital enlargement to get a closer view.