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1. Which aperture has a larger diameter, thus allowing more light to reach the film in a given time?

f/4
f/8

2. For the aperture that you selected in problem 1, how many times more light does it allow to reach the film than the other aperture?

square root of 2
2
4
8

3. Which shutter speed allows more light to reach the film in a given time?

125
500

4. For the shutter speed that you selected in problem 3, how many times more light does it allow to reach the film in than the other shutter speed?

2
4
8

5. Suppose you've determined that f/5.6 is the best f-stop to use for taking a high-speed photograph of a bursting balloon using an ISO 400 setting on the camera. If you now change to ISO 200, what must the f-stop be in order to obtain the same exposure?

6.  Tell why shutter speed doesn’t affect exposure in high-speed flash photography.

7. How does one determine the correct f-stop for taking a photograph with flash?

8.  When using a flash unit in automatic exposure mode, how do you compensate for different distances between the subject and the camera? (Some might call this a trick question.)

9. Tell what you can do to minimize the problem of thermal noise in photographs that you take with a digital still camera. (The answer has to do with how to set the camera before taking the photo rather than how to fix thermal noise with software after the picture is taken.)

10.  What is shutter lag?