We often have hummingbirds in our yard and this spring I noticed that they were building a nest right next to our deck. Catching a hummingbird in flight is an exercise in patience. They move so quickly in and out that it can present a significant challenge to timing it just right. Having a camera that can fire off 10 frames per second is a definite advantage. The other issue was all of the foliage and branches that were in the way. I found it worked best to put my camera on a tripod, focus manually and then fire away whenever the bird arrived. Other wise the autofocus would sometimes focus on the branches which were between the camera and the nest. An effective 400mm focal length, (using a 2x extender on my 200mm lens), will blur out a lot of the intervening branches but I had to use the clone tool to get rid of a few of them. You can see them in the version of the photo to the right and will also notice that my cloning skills are not great. Anyway, I was still happy with the image.