Expand mobile version menu
  Skip to main content

Camera and Photographic Equipment Repairer

Real-Life Activities

Real-Life Math -- Solution

You are a camera repairer who has been working on a flash. Now that your repairs are finished, you test the flash to make sure it operates properly.

You are using an ISO 50 film speed and an aperture of 3.5. What are the maximum and minimum ranges of the flash?

Maximum flash range (in yards) = Guide Number / Aperture you selected

Guide Number for ISO 50 film = 8.5
Aperture you selected = 3.5
Maximum flash range = 8.5 / 3.5
Maximum flash range = 2.43 yards

The maximum flash range is 2.43 yards.

Minimum flash range (in yards) = Maximum flash distance/ 5
Minimum flash range = 2.43 yards / 5
Minimum flash range = 0.49 yards

The flash range for this film speed and aperture is 0.49 yards to 2.43 yards.


Contact

  • Email Support

  • 1-800-GO-TO-XAP (1-800-468-6927)
    From outside the U.S., please call +1 (424) 750-3900

Support


Powered by XAP

OCAP believes that financial literacy and understanding the financial aid process are critical aspects of college planning and student success. OCAP staff who work with students, parents, educators and community partners in the areas of personal finance education, state and federal financial aid, and student loan management do not provide financial, investment, legal, and/or tax advice. This website and all information provided is for general educational purposes only, and is not intended to be construed as financial, investment, legal, and/or tax advice.