Vernier Software and Technology
Vernier Software & Technology

Aperture and Depth of Field


Lenses are used in a variety of everyday applications. In a camera, light from a source passes through a lens and an opening, called the aperture, and forms a real image that is recorded by film or a sensor. The size and shape of the aperture affects how much light strikes the film or sensor; they also have an effect on some characteristics of the image. In this experiment, you will investigate the role of the aperture in image formation.


In this experiment, you will

  • Predict and observe the effect of the size and shape of the aperture on the formation of a real image.
  • Observe how the size of the aperture affects the depth of field.
  • Observe how focal length and object distance affect the depth of field.

Sensors and Equipment

This experiment features the following Vernier sensors and equipment.

Additional Requirements

You may also need an interface and software for data collection. What do I need for data collection?

Experiment 18 from Advanced Physics with Vernier — Beyond Mechanics Lab Book

<i>Advanced Physics with Vernier — Beyond Mechanics</i> book cover

Included in the Lab Book

Vernier lab books include word-processing files of the student instructions, essential teacher information, suggested answers, sample data and graphs, and more.

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