This is going to be really helpful because it actually makes F stops make sense. Thanks Alastair!
I was asked a while ago by Tiara if I could do a tutorial on shutter speeds. As I am not good enough to do that, I decided to upload a cheat sheet that came free with a photo magazine. You can find that cheat sheet here. Since then, there have been a few more cheat sheets published. If you click on the picture, you will see the full size image.