ABSTRACT
On the surface, focusing seems simple enough. During a blocking rehearsal, marks are laid to indicate the places on the set where the actors will be stop-ping and standing during a scene. The first camera assistant measures the distance from the focal plane (on the camera) to each actor's position using a cloth or fiberglass tape. The first makes notes or memorizes the distances that will need to be set when the scene is shot. The director calls “Action,” and using the geared knob attached to the barrel of the lens, the first adjusts the focus as the scene proceeds to whatever distance the actor is from the camera. That's all there is to it!
