Lesson 8: Filter Factors

1. Which line has the “full” f-stops in the correct order?

2. Which line has the “full” shutter speeds in the correct order?

3. If you move the f-stop from F11 to F8, what happens to the amount of light that reaches the sensor?

4. If you move the shutter speed from 1/125 to 1/250, what happens to the amount of light that reaches the sensor?

5. How much more or less light reaches the sensor if you move the shutter speed from 1/60 to 1/30?

6. If you were using a shutter speed of 1/500, what speed would you need use if you wanted to cut the amount of light reaching the sensor, in half?

7. If you were using a shutter speed of 1/250, what speed would you need use if you wanted to double the amount of light reaching the sensor?

8. What is the most likely outcome if you change the shutter speed from 1/60 to a speed of 1/15?

9. What is the most likely outcome if you change the shutter speed from 1/125 to a speed of 1/500?

10. Which of the following shutter speeds might be best for photographing a runners crossing the finish line at a race?

6. How much more or less light reaches the sensor if you move the shutter speed from 1/500 to 1/125?

7. How much more or less light reaches the sensor if you move the shutter speed from F4 to F16?

8. A filter factor of 4X represents a required increase of how many stops?

9. A filter factor of 8X represents a required increase of how many stops?

10. A filter factor of 16X represents a required increase of how many stops?

11. Given an exposure of F8 @ 125 at 100 ISO, what would be the new exposure if using a filter with a 4X Filter Factor?

12. Given an exposure of F5.6 @ 500 at 100 ISO, what would be the new exposure if using a filter with a 4X Filter Factor?

13. Given an exposure of F16 @ 15 at 100 ISO, what would be the new exposure if using a filter with an 8X Filter Factor?

14. Given an exposure of F11 @ 60 at 400 ISO, what would be the new exposure if using a filter with an 16X Filter Factor?