In the second installment of the DSLR Film School, I talk about F Stop and what its primary and secondary functions are. The first three tutorials in this series deal with exposure. Shutter Speed, F Stop, and ISO. Each of these settings have a primary and a secondary function. The primary function in all three is the same, brightness. The secondary function however, is different in all three. It is those secondary functions that I believe are important to understand and I spend the most time on these.
DSLR Film School – F Stop
Ken Rockwell site : www.kenrockwell.com/tech/reviews.htm
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(cover photo credit: snap from the video)