A few weeks ago, a friend recommended that I use single-point auto focus as opposed to multi-point when photographing Hummingbirds. Online and reputable sources recommend otherwise but I thought I would give it a try. The results are about the same, multi-point might be a little bit better. Regardless of what focusing strategy you use, photographing Hummingbirds is challenging. 6-9/250 shots were worth keeping but that is a very successful day for any nature photographer.