Perfect Exposures in a Flash

Welcome to your Perfect Exposures in a Flash

1. What is the correct formula for determining the proper aperture setting when using a flash?

A. Guide # X Distance = fstop

B. Distance / Guide # = fstop

C. Guide # / Distance = fstop

D. fstop = Guide # - Distance

Which of the following statements is true about guide numbers?

A. The guide number is always 110.

B The guide number represents the power output of the flash.

C. Guide numbers stay consistant at each IOS.

D. Guide Numbers indicate what shutter speed is required.

What is the correct exposure when using a flash that has a guide number of 80 and is at a distance of 20 feet?

A. F4

B. F8

C. F11

D. F16

What is the correct exposure when using a flash that has a guide number of 110 and is at a distance of 20 feet?

A. F2.8

B. F4

C. F5.6

D. F8

What is the correct exposure when using a flash that has a guide number of 110 and is at a distance of 15 feet?

A. F2.8

B. F4

C. F5.6

D. F8

What is the correct exposure when using a flash that has a guide number of 60 and is at a distance of 10 feet?

A. F11

B. F8

C. F5.6

D. F4

When using a flash with an "automatic zoom head", which of the following will occur if the zoom feature is "On"?

A. The intensity of the light on the subject increases as you increase the focal length of a zoom lens.

B. The intensity of the light on the subject decreases as you increase the focal length of a zoom lens.

C. The intensity of the light on the subject increases as you decrease the focal length of a zoom lens.

D. The coverage spread of the light increases as you increase the focal length of a zoom lens.

What happens when you turn off the Auto Zoom Head feature of your flash and turn it to the Manual Zoom Mode?

A. You may not change the zoom settings on your lens.

B. The flash can no longer be used on camera.

C. The intensity of the light on the subject stays varies when you zoom your lens.

D. The intensity of the light on the subject stays consistant.