Shutter speed is one of the three elements of the Exposure Triangle (aperture, shutter speed and ISO).
The shutter mechanism is a sophisticated door or curtain that resides in front of the camera’s sensor that is opened and closed with mind-blowing precision.
The shutter speed is not a measurement of speed. Instead, it is a measurement of time. It equals the amount of time the shutter stays open to let the light reach the camera’s sensor. It is measured in seconds or fractions of a second.
Photographers often use shutter speed as a creative tool. By using different shutter speed values, we can achieve stunning visual effects in our photos.