F-Stops Explained
Super smart guy Dylan Bennet put together a great video that explains everything you ever wanted to know about F-Stops, apertures, and just what all them numbers mean. It’s probably one of the best explanations you are going to get on the subject, just don’t freak out when you see him start to do math. He also gives a great tip on how to remember the stops scale.
(from PetaPixel)
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