How to calculate new shutter speed base on F stop increment or decrement?

Started Oct 1, 2008 | Discussions thread
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Soo Yee Seong Junior Member • Posts: 37
How to calculate new shutter speed base on F stop increment or decrement?

I am not sure if i am asking the correctly. But I would like to learn how to calculate new shutter speed base on F stop increment or decrement? for example, 1/60 after 1-stop decrement = ?.

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