When I clicked on this video, I figured I wouldn't learn a thing. If you're like me, you fully understand how to use the f-stop principle, even if you can't remember where all the numbers came from. I know I've heard all of this before, but it's been years. When I explain f-stop to someone, I don't get quite so mathematical. In this video, Dylan Bennett provides a straightforward and mathematical explanation of f-stop. It's great for those who are just learning the numbers, or if you need to refresh your memory. Go ahead and geek out on the mathematics of photography, y'all.
Via: Picture Correct