Dolly Zoom

What is a Dolly Zoom?

A dolly zoom is a camera technique used in filmmaking. It involves moving the camera towards or away from a subject while simultaneously adjusting the zoom lens to keep the subject the same size in the frame. This creates a disorienting visual effect where the background seems to change size relative to the subject. The technique is often used to convey a sense of confusion, tension, or psychological distress in the viewer.

How does a Dolly Zoom work?

To achieve a dolly zoom, the camera must be on a dolly and move either closer to or further from the subject. At the same time, the cameraperson adjusts the zoom on the lens. If the camera moves closer, the zoom is adjusted to a wider angle. If the camera moves away, the lens is zoomed in to a tighter shot. This dual adjustment keeps the main subject roughly the same size in the frame while the background's spatial relationship changes dramatically.

• Moving closer + zooming out = background appears to grow larger and envelop the subject.
• Moving away + zooming in = background seems to pull away and stretch out.

Where have you seen a Dolly Zoom?

One of the most famous examples of a dolly zoom can be seen in Alfred Hitchcock's movie "Vertigo." In this film, the effect is used to depict the character's fear of heights and disorientation. Since then, this technique has been used in many other films and television shows to create a similar impact, helping to visually express a character's emotional state without using words.

• Film examples include 'Jaws,' where the technique amplifies the sheriff’s panic upon realizing the proximity of the shark.
• In music videos and commercials, it adds a dramatic flair to highlight moments of intensity or surprise.

Understanding and observing the dolly zoom effect can make your viewing experience more insightful as you notice how directors use the camera to tell a story.