F-stops, Apertures and Lenses: a Lesson with Jon Wason

What is an F-stop? What is an aperture? How does the f-stop relate to the shutter speed? Learn the answers to these questions and more. Jon Wason uses salt to represent light for a lesson that will clarify the concepts and help improve your photography.


Follow this link for a 9 minute video:


http://youtu.be/FBJLg77daP8