Shooting with a flash often needs an assistant to keep moving the flash around to track the moving subject, as the camera also moves to track the subject.

In some situations where an assistant is either not available or not practical. In these situations the flash is set in a location which would cover most subject locations, with a wide flash beam. Lots of flash power is wasted,  and it’s very inefficient.

What if the flash(s) could track the subject by themselves, always aiming the flash at the subject? Well, it may be possible using one of these Direction Finder tools.

The way it would work is that the flash (with a remote trigger) would be on a servo controlled gymbal, and the camera would paint the subject with a pulsed IR laser (pulsed so that the tracker only tracks the pulsed signal and not other continuous IR sources).