Are some effects more suited to audience scanning than others?
Yes, effects that include stationary or slow moving beams should be avoided at all times. If you can see the beam moving through the path it is taking, it is almost certainly too dangerous to project into the audience. You should also avoid projecting effects that contain hot spots or dwell points in them. That is where extra points are put into certain parts of the effect to help define a sharp corner etc. The energy present on these types of effect is not evenly dispersed and the hot spots may be hazardous. Smooth flowing effects such as a circular tunnel are safer, because they maintain a more constant speed. Additionally of you keep the whole effect panning over the audience, it helps to reduce the amount of time the laser beam is in any one persons eyes.
