shutter speed or exposure time is the length of time when the film or digital sensor inside the camera is exposed to light, also when a camera's shutter is open when taking a photograph. The amount of light that reaches the film or image sensor is proportional to the exposure time.
shutter speed is actually quite important in photos, as this is what gives affect to our photos
Types of shutter speed
Stop action
When you take a picture while the object is in mid air like falling.
Panned action
When the back is burly but the person or object is clear and in focus.
Blurred action
When the object or person s out of focused but the back isn't.