The Depth-of-Field Quiz for Camera Assistants

The Depth of Field Test at The Black and Blue

This test is divided into two parts.

The first part tests your knowledge of the basic principles of depth-of-field while the second part tests your ability to accurately guess the amount of depth-of-field with a real-world situation.

Best of luck!

Basic Principles

  • 1. Which camera or lens setting has no effect on depth-of-field?
  • 2. When a point in the subject or scene registers also as a point on film or video, it is referred to as being __________.
  • 3. True or false: the size of the finished film or video image (projected, TV, Internet) has an effect on acceptable focus?
  • 4. What is the approximate ratio of depth-of-field in front of and behind a subject you are focused on?
  • 5. What is the closest distance at which the far limit of depth-of-field extends to infinity called?
  • 6. Stopping down the lens __________ depth-of-field.
  • 7. Opening up the iris of a lens __________ depth-of-field.
  • 8. Getting closer to the subject you're focusing on __________ depth-of-field.
  • 9. Adding a filter in front of the lens without adjusting the exposure __________ depth-of-field.
  • 10. Using a 35mm film camera as opposed to a 16mm film camera for the exact same shot would cause depth-of-field to __________.

Guess the Depth-of-Field

In this section, you are given a situation and must guess the depth-of-field you have. You may assume that the camera is shooting 24 frames-per-second with a 180-degree shutter.

  • 11. How much depth-of-field do you have with the settings below?
  • ARRI 435 Camera, 50mm Lens, F-stop 2.8, Subject at 6 feet
  • 12. How much depth-of-field do you have with the settings below?
  • Canon 7D, 28mm Lens, f-stop 5.6, Subject at 10 feet
  • 13. How much depth-of-field do you have with the settings below?
  • ARRIFLEX SR3, 16mm film, 100mm lens, f-stop 4.0, subject at 25 feet
  • 14. How much depth-of-field do you have with the settings below?
  • RED One camera, 4K Resolution, 85mm Lens, f-stop 2.8-4 split, subject at 12 feet
  • 15. How much depth-of-field do you have with the settings below?
  • RED Epic Camera, 18mm lens, f-stop 8, subject at 50 feet
  • 16. How much depth-of-field do you have with the settings below?
  • ARRI Alexa, 35mm lens, f-stop 1.4, subject at 8 feet
  • 17. How much depth-of-field do you have with the settings below?
  • Canon C300, 70mm lens, f-stop 11.0, subject at 42 feet
  • 18. How much depth-of-field do you have with the settings below?
  • RED Epic, 2K Resolution, 25mm lens, f-stop 2.8, subject at 20 feet
  • 19. How much depth-of-field do you have with the settings below?
  • Two-thirds broadcast camera, 35mm lens, f-stop 4.0, subject at 15 feet
  • 20. How much depth-of-field do you have with the settings below?
  • ARRI 435, 35mm film, 200mm lens, f-stop 5.6, subject at 100 feet