Flash
Task 3. Exposure Calculation - by using an incident light meter
Given that: f/stop = GN/Distance
1. Work out the aperture required to photograph a subject at 3m from the flash.
10.6 = 32/3 so therefore the f number will be f11 by rounding up to the closest f number.
2. What would be the aperture required if you changed your ISO to 200?
Changing the ISO by one stop requires to change the aperture down one stop so it would be f16.
No comments:
Post a Comment