How To Use Shutter Speed To Control Your Digital Camera
The second component, shutter speed, works in conjunction with aperture and ISO to get the correct exposure for a picture. When you set your camera to Shutter Priority (A or Tv on the mode dial), you select the shutter speed, and your camera will adjust the aperture accordingly. You can also set the ISO independently, and the camera will make adjustments as well. Sounds kind of complicated, but with a bit of practice, it will all make sense.