How to incrementally adjust fuji x100 shutter speed

This is the shutter speed adjustment dial. As you can see, increments are big. This shows you how to choose values between them.

Turn the dial to a shutter speed close to what you want, in this case 1/4000 of a second

You can see your shutter speed value on the bottom left hand corner of the LCD screen.

Now turn the menu wheel on the back of the camera clockwise to jump down values. The next speed on the big manual dial on top of the camera is 1/2000, but this allows you to choose 1/3000 or 1/2500

See, 1/3000, a shutter speed not listed on the big manual dial.