A visual element or the entire image appears to move forward filling more of the frame. Tilting (or swinging) the print in the opposite direction reverses the effect.
Similar to Zooming a camera lens, the field of view either decreases or increases.
The first and last frames of the print are sharp with an adequate dwell time, whilst the intermediate animation frames display a fast motion blur.
Typically, the zoom effect is confined to a single element such as a ball being hit or thrown toward the viewer. Whist at other times, the entire scene can appear to near.