What does shutter speed do…
The main purpose of the shutter speed setting is to control exposure time. However, it also influences the way in which movement is displayed. Using fast exposure speeds can ’freeze‘ the motion of flying birds or running deer. Slow shutter speeds, by comparison, provide the photographer with a blurred image, which may be desirable if you want to give the impression of speed. The main benefit of slow shutter speeds, however, is that they enable photographs to be taken in poor light conditions. If the camera has a ’Shutter Priority‘ mode, the photographer selects the shutter speed manually and the camera chooses the most suitable aperture setting to achieve optimum exposure.
