I, for one, can't figure how some of you guys can get that perfect zoomed-in shot of CL planes in flight. I guess my reaction time is too slow.
It can be a little trying, but electrons are cheap. When the airplane is flying around, focus the camera on the ground below it, and "hold" the focus - usually, you can half-press the shutter and it will focus once, and stay that way. Then start following the airplane in the viewfinder half-a-lap before it gets to you, panning along with it. When it gets near the spot you focused, push the shutter all the way while continuing to pan. It will take the picture of the airplane, and since it is mostly stationary in the field of view, it won't be blurred. While at the same time, the background *will* be blurred, which tends to separate the airplane from the background clutter.
It is possible to just point it and wait, but by the time you push the button, it can be too late. Its very much more difficult with point-and-shoot cameras because they usually only have video viewfinders, and those lag far behind the action.
Brett