> >All pentax auto focus cameras will do this, I think. Mount a manual focus > >lens, focus on a point in space that a moving object will pass through, > >(can't be moving too fast however, no 90 mph fast balls here), hold the > >shutter release down. The camera will fire when the object moves the > >point of focus. > > I suppose this only works best for relatively slow moving objects? > > For example, I suspect that a nearby speeding car might move beyond the > point of focus by the time the shutter actually opens? I would think there > is probably a tiny amount of lag time between the focus detector being > triggered and the shutter actually opening. This might be just enough time > to allow a fast subject to move beyond the point of best focus.
On the MZ-S, it only works with the lower center focusing point. That makes it difficult to use with fast moving objects. I don't know what the limit is. I haven't been able to track fast subjects well enough to test the limits of the system. I did get a couple shots of a blue heron in flight using it. Tom Reese
