June 10, 2017

Watch: The Easiest Way to Memorize the F-Stop Scale


If you can’t keep track of all of those f-numbers, then you should learn this essential trick.


Knowing the f-stop scale is important if you want to quickly and accurately expose your images, however many of us have a difficult time memorizing it. If you’re like me and can’t remember your own phone number half the time let alone a long sequence of f-stops, then this super simple equation will help you be able to do it with ease. Filmmaker Griffin Hammond shows you how to do it in the video below:





This method of memorizing the f-stop scale is so simple that I’m wondering why I never learned it in college. As Hammond explains, all you really have to remember are two numbers: 1 and 1.4. After that, you know the entire f-stop scale, because all you have to do is double the f-number to get the next in the sequence.



For example:



1, 1.4 (That’s the beginning of the sequence. Now, double them to get the next in the sequence.)



1, 1.4, 2, 2.8 (Now that you have those, keep going. You’ll have to round a few numbers up/down occasionally.)

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Source: NoFilmSchool