We live a lane that is 20 feet across. I took out the dog this morning and noticed a leaf hanging by a spider's "string" across the width of the road. I quickly retrieved my GH2 and 20/1.7 lens to try to capture the scene before a car or bicyclist came by and swept it away. I had to focus manually because the leaf was so small that the AF wanted to accommodate a bigger area and also because the wind kept moving the leaf, sometimes quite dramatically. All pp in Aperture. Any suggestions for a technique that would have worked better?