The effect only worked when you stood a good distance from the finished canvas.
The trickle down effect does not work, and never has done.
Visual effects work continued until right before the film was released in October 2001.
Both effects work so well because of the correct tempos in which they move.
His studied effects work best when light is dramatically manipulated.
It was left out of the film because Blatty wasn't happy with the special effects work.
The effect works at speeds from about 40 to 64 km/h.
But it was not until 1938 when a film was actually recognized for its effects work.
If the effect had worked on him while he was ill, he did not remember it.
In addition, Winston was nominated for his visual effects work.